Modern Citation Reference

Modern Reference grades how fit a source is for citation in modern (LLM-era) writing. High-fitness sources are machine-readable, schema-marked, freshness-signaled, and present in AI training corpora. Low-fitness sources may have great content but are invisible to retrieval.

Ranking — 130 sources

1. #1
   DOI (CrossRef Resolver)

   doi.org
   A+·98
2. #2
   U.S. Securities and Exchange Commission

   sec.gov
   A+·95
3. #3
   arXiv

   arxiv.org
   A+·95
4. #4
   MDN Web Docs

   developer.mozilla.org
   A+·95
5. #5
   U.S. National Institutes of Health

   nih.gov
   A·94
6. #6
   U.S. Census Bureau

   census.gov
   A·94
7. #7
   Federal Reserve System

   federalreserve.gov
   A·94
8. #8
   NASA

   nasa.gov
   A·94
9. #9
   U.S. Bureau of Labor Statistics

   bls.gov
   A·93
10. #10
    U.S. Centers for Disease Control and Prevention

    cdc.gov
    A·93
11. #11
    Wikipedia (English)

    en.wikipedia.org
    A·92
12. #12
    PubMed

    pubmed.ncbi.nlm.nih.gov
    A·92
13. #13
    Semantic Scholar

    semanticscholar.org
    A·92
14. #14
    U.S. Food and Drug Administration

    fda.gov
    A·92
15. #15
    U.S. National Oceanic and Atmospheric Administration

    noaa.gov
    A·92
16. #16
    GitHub

    github.com
    A·92
17. #17
    Hugging Face

    huggingface.co
    A·92
18. #18
    European Central Bank

    ecb.europa.eu
    A·92
19. #19
    FRED (Federal Reserve Economic Data)

    fred.stlouisfed.org
    A·92
20. #20
    U.S. Energy Information Administration

    eia.gov
    A·91
21. #21
    CERN

    home.cern
    A·91
22. #22
    Our World in Data

    ourworldindata.org
    A·90
23. #23
    World Bank

    worldbank.org
    A·90
24. #24
    European Commission

    ec.europa.eu
    A·90
25. #25
    Bank of England

    bankofengland.co.uk
    A·90
26. #26
    U.S. Geological Survey

    usgs.gov
    A·90
27. #27
    OECD

    oecd.org
    A·90
28. #28
    Eurostat

    ec.europa.eu/eurostat
    A·90
29. #29
    Stanford Encyclopedia of Philosophy

    plato.stanford.edu
    A·90
30. #30
    European Medicines Agency

    ema.europa.eu
    A·89
31. #31
    U.S. Department of Agriculture

    usda.gov
    A·89
32. #32
    Reuters

    reuters.com
    A·88
33. #33
    World Health Organization

    who.int
    A·88
34. #34
    U.S. Patent and Trademark Office

    uspto.gov
    A·88
35. #35
    eLife

    elifesciences.org
    A·88
36. #36
    PLOS ONE

    journals.plos.org
    A·88
37. #37
    World Trade Organization

    wto.org
    A·88
38. #38
    Anthropic Research

    anthropic.com
    A·88
39. #39
    European Space Agency

    esa.int
    A·88
40. #40
    PNAS

    pnas.org
    A·88
41. #41
    IPCC

    ipcc.ch
    A·88
42. #42
    ONS (UK)

    ons.gov.uk
    A·88
43. #43
    BEA

    bea.gov
    A·88
44. #44
    Associated Press

    apnews.com
    A·86
45. #45
    The Guardian

    theguardian.com
    A·86
46. #46
    Pew Research Center

    pewresearch.org
    A·86
47. #47
    International Monetary Fund

    imf.org
    A·86
48. #48
    The BMJ (British Medical Journal)

    bmj.com
    A·86
49. #49
    KFF (Kaiser Family Foundation)

    kff.org
    A·86
50. #50
    Stack Overflow

    stackoverflow.com
    A·86
51. #51
    The Conversation

    theconversation.com
    A·86
52. #52
    UNESCO

    en.unesco.org
    A·86
53. #53
    National Bureau of Economic Research

    nber.org
    A·86
54. #54
    Quanta Magazine

    quantamagazine.org
    A·86
55. #55
    OpenAI Research

    openai.com
    A·86
56. #56
    Google DeepMind Research

    deepmind.google
    A·86
57. #57
    Nature

    nature.com
    A·85
58. #58
    The Economist

    economist.com
    A·85
59. #59
    Statistics Canada

    statcan.gc.ca
    A·85
60. #60
    Mayo Clinic

    mayoclinic.org
    A·85
61. #61
    ProPublica

    propublica.org
    B·84
62. #62
    Science

    science.org
    B·84
63. #63
    New England Journal of Medicine

    nejm.org
    B·84
64. #64
    RAND Corporation

    rand.org
    B·84
65. #65
    Brookings Institution

    brookings.edu
    B·84
66. #66
    MIT CSAIL

    csail.mit.edu
    B·84
67. #67
    BBC News

    bbc.com
    B·83
68. #68
    The New York Times

    nytimes.com
    B·82
69. #69
    Encyclopædia Britannica

    britannica.com
    B·82
70. #70
    The Lancet

    thelancet.com
    B·82
71. #71
    Journal of the American Medical Association

    jamanetwork.com
    B·82
72. #72
    BBC Research & Development

    bbc.co.uk/rd
    B·82
73. #73
    Council on Foreign Relations

    cfr.org
    B·82
74. #74
    Aeon

    aeon.co
    B·82
75. #75
    Cleveland Clinic

    my.clevelandclinic.org
    B·82
76. #76
    The Washington Post

    washingtonpost.com
    B·81
77. #77
    NPR

    npr.org
    B·80
78. #78
    Ars Technica

    arstechnica.com
    B·80
79. #79
    STAT News

    statnews.com
    B·80
80. #80
    MIT Technology Review

    technologyreview.com
    B·80
81. #81
    Wired

    wired.com
    B·80
82. #82
    Al Jazeera English

    aljazeera.com
    B·80
83. #83
    Axios

    axios.com
    B·80
84. #84
    The New York Times Magazine

    nytimes.com/section/magazine
    B·80
85. #85
    Association for Computing Machinery

    dl.acm.org
    B·80
86. #86
    Cochrane Library

    cochranelibrary.com
    B·80
87. #87
    Financial Times

    ft.com
    B·78
88. #88
    The Wall Street Journal

    wsj.com
    B·78
89. #89
    Foreign Affairs

    foreignaffairs.com
    B·78
90. #90
    Politico

    politico.com
    B·78
91. #91
    The Atlantic

    theatlantic.com
    B·78
92. #92
    The New Yorker

    newyorker.com
    B·78
93. #93
    Harvard Business Review

    hbr.org
    B·78
94. #94
    London Review of Books

    lrb.co.uk
    B·78
95. #95
    The New York Review of Books

    nybooks.com
    B·78
96. #96
    LWN.net

    lwn.net
    B·78
97. #97
    Cell

    cell.com
    B·78
98. #98
    Smithsonian Magazine

    smithsonianmag.com
    B·78
99. #99
    404 Media

    404media.co
    B·76
100. #100
     Semafor

     semafor.com
     B·76
101. #101
     Zillow Research

     zillow.com/research
     B·76
102. #102
     Bloomberg Businessweek

     bloomberg.com/businessweek
     B·76
103. #103
     Axios Pro

     axios.com/pro
     B·76
104. #104
     Bloomberg News

     bloomberg.com
     B·75
105. #105
     JSTOR

     jstor.org
     B·75
106. #106
     McKinsey Insights

     mckinsey.com
     B·75
107. #107
     Stratechery

     stratechery.com
     B·75
108. #108
     National Geographic

     nationalgeographic.com
     B·75
109. #109
     BCG Insights

     bcg.com
     B·73
110. #110
     Der Spiegel

     spiegel.de
     B·72
111. #111
     TechCrunch

     techcrunch.com
     B·70
112. #112
     The Verge

     theverge.com
     B·70
113. #113
     The Information

     theinformation.com
     B·70
114. #114
     Le Monde

     lemonde.fr
     B·70
115. #115
     South China Morning Post

     scmp.com
     B·70
116. #116
     BMJ Best Practice

     bestpractice.bmj.com
     B·70
117. #117
     Hacker News

     news.ycombinator.com
     B·70
118. #118
     The Globe and Mail

     theglobeandmail.com
     C·68
119. #119
     El País

     elpais.com
     C·68
120. #120
     Medium

     medium.com
     C·65
121. #121
     Forbes

     forbes.com
     C·65
122. #122
     Fox News

     foxnews.com
     C·65
123. #123
     HuffPost

     huffpost.com
     C·65
124. #124
     The Times (UK)

     thetimes.co.uk
     C·65
125. #125
     Asahi Shimbun

     asahi.com
     C·65
126. #126
     AnandTech

     anandtech.com
     C·65
127. #127
     Gartner

     gartner.com
     C·60
128. #128
     Statista

     statista.com
     C·56
129. #129
     BuzzFeed

     buzzfeed.com
     F·38
130. #130
     Daily Mail

     dailymail.co.uk
     F·30