Best sources overall for AI citation by Citation Discipline

Same 25 sources, re-sorted by Citation Discipline only — different signal than the composite Index. The leader changes: U.S. Securities and Exchange Commission takes the top position at A+ · 98.

1. 1
   U.S. Securities and Exchange Commissionsec.gov

   Primary-source regulator publishing every public-company filing (13F, 10-K, 8-K, etc.) since 1934.

   Discipline A+ · 98·Index A+ · 96·Government
   A+·98
2. 2
   Federal Reserve Systemfederalreserve.gov↑2

   U.S. central bank; primary source for monetary policy + economic data + financial-system statistics.

   Discipline A+ · 96·Index A+ · 95·Government
   A+·96
3. 3
   Wikipedia (English)en.wikipedia.org↑2

   Crowd-edited encyclopedia with ~7M articles and per-article inline citation discipline.

   Discipline A+ · 96·Index A · 94·Reference
   A+·96
4. 4
   PubMedpubmed.ncbi.nlm.nih.gov↑2

   U.S. National Library of Medicine literature index covering ~36M biomedical citations.

   Discipline A+ · 96·Index A · 94·Academic
   A+·96
5. 5
   U.S. Food and Drug Administrationfda.gov↑4

   Federal agency for food + drug + medical-device safety; primary-source approvals + safety alerts.

   Discipline A+ · 96·Index A · 94·Government
   A+·96
6. 6
   CERNhome.cern↑12

   European Organization for Nuclear Research; primary source for particle physics + experimental high-energy physics.

   Discipline A+ · 96·Index A · 92·Academic
   A+·96
7. 7
   PNASpnas.org↑12

   Proceedings of the National Academy of Sciences — multidisciplinary peer-reviewed journal since 1914.

   Discipline A+ · 96·Index A · 92·Academic
   A+·96
8. 8
   U.S. National Institutes of Healthnih.gov↓6

   U.S. federal medical research agency operating PubMed, NCBI, MedlinePlus, and trial registries.

   Discipline A+ · 95·Index A+ · 95·Government
   A+·95
9. 9
   U.S. Census Bureaucensus.gov↓2

   Federal statistical agency for U.S. demographic + economic data; primary-source decennial census + ACS surveys.

   Discipline A+ · 95·Index A · 94·Government
   A+·95
10. 10
    U.S. Bureau of Labor Statisticsbls.gov↓2

    Federal statistical agency for U.S. labor + price data; CPI, employment, unemployment, productivity.

    Discipline A+ · 95·Index A · 94·Government
    A+·95
11. 11
    U.S. Centers for Disease Control and Preventioncdc.gov↓1

    Federal agency for U.S. public-health surveillance + disease prevention; primary-source MMWR + WONDER data.

    Discipline A+ · 95·Index A · 94·Government
    A+·95
12. 12
    U.S. National Oceanic and Atmospheric Administrationnoaa.gov↓1

    Federal scientific agency for weather + ocean + climate data; primary-source forecasts + climate research.

    Discipline A+ · 95·Index A · 93·Government
    A+·95
13. 13
    European Central Bankecb.europa.eu↓1

    EU central bank; primary source for euro-area monetary policy + financial-system data.

    Discipline A+ · 95·Index A · 93·Government
    A+·95
14. 14
    U.S. Patent and Trademark Officeuspto.gov↑7

    Federal agency granting U.S. patents + trademarks; primary-source patent + trademark database.

    Discipline A+ · 95·Index A · 91·Government
    A+·95
15. 15
    U.S. Geological Surveyusgs.gov↑8

    Federal scientific agency for earth sciences; primary source for geology + hydrology + earthquake data.

    Discipline A+ · 95·Index A · 91·Government
    A+·95
16. 16
    NASAnasa.gov↓3

    U.S. space agency; primary source for space exploration + Earth science + aeronautics research.

    Discipline A · 94·Index A · 93·Government
    A·94
17. 17
    European Commissionec.europa.eu↓2

    EU executive branch publishing primary-source policy + statistics + legislation.

    Discipline A · 94·Index A · 92·Government
    A·94
18. 18
    Bank of Englandbankofengland.co.uk↓2

    UK central bank; primary source for sterling monetary policy + financial-stability data since 1694.

    Discipline A · 94·Index A · 92·Government
    A·94
19. 19
    U.S. Energy Information Administrationeia.gov↓2

    Federal energy statistical agency; primary source for U.S. + international energy data + projections.

    Discipline A · 94·Index A · 92·Government
    A·94
20. 20
    European Medicines Agencyema.europa.eu

    EU agency for evaluation + supervision of medicinal products; primary-source EU drug approvals.

    Discipline A · 94·Index A · 91·Government
    A·94
21. 21
    U.S. Department of Agricultureusda.gov↑1

    Federal agriculture agency; primary source for U.S. food, farm, and rural-development data + research.

    Discipline A · 94·Index A · 91·Government
    A·94
22. 22
    FRED (Federal Reserve Economic Data)fred.stlouisfed.org↑3

    Federal Reserve Bank of St. Louis economic data infrastructure; ~800k+ data series.

    Discipline A · 94·Index A · 91·Government
    A·94
23. 23
    OECDoecd.org↑1

    Organisation for Economic Co-operation and Development; international economic data + policy research.

    Discipline A · 93·Index A · 91·Government
    A·93
24. 24
    DOI (CrossRef Resolver)doi.org↓21

    International standard identifier resolver for academic citations (~150M+ DOIs).

    Discipline A · 92·Index A+ · 95·Academic
    A·92
25. 25
    MDN Web Docsdeveloper.mozilla.org↓11

    Mozilla-stewarded web-platform reference since 2005; default citation for HTML, CSS, JS, Web APIs.

    Discipline A · 92·Index A · 93·Reference
    A·92