Best triple-crown sources (A or higher on all three dimensions) by Modern Citation Reference

Same 15 sources, re-sorted by Modern Citation Reference only — different signal than the composite Index. The leader changes: DOI (CrossRef Resolver) takes the top position at A+ · 98.

1. 1
   DOI (CrossRef Resolver)doi.org↑2

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

   Modern Reference A+ · 98·Index A+ · 95·Academic
   A+·98
2. 2
   U.S. Securities and Exchange Commissionsec.gov↓1

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

   Modern Reference A+ · 95·Index A+ · 96·Government
   A+·95
3. 3
   MDN Web Docsdeveloper.mozilla.org↑11

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

   Modern Reference A+ · 95·Index A · 93·Reference
   A+·95
4. 4
   U.S. National Institutes of Healthnih.gov↓2

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

   Modern Reference A · 94·Index A+ · 95·Government
   A·94
5. 5
   Federal Reserve Systemfederalreserve.gov↓1

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

   Modern Reference A · 94·Index A+ · 95·Government
   A·94
6. 6
   U.S. Census Bureaucensus.gov↑1

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

   Modern Reference A · 94·Index A · 94·Government
   A·94
7. 7
   NASAnasa.gov↑6

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

   Modern Reference A · 94·Index A · 93·Government
   A·94
8. 8
   U.S. Bureau of Labor Statisticsbls.gov

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

   Modern Reference A · 93·Index A · 94·Government
   A·93
9. 9
   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.

   Modern Reference A · 93·Index A · 94·Government
   A·93
10. 10
    Wikipedia (English)en.wikipedia.org↓5

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

    Modern Reference A · 92·Index A · 94·Reference
    A·92
11. 11
    PubMedpubmed.ncbi.nlm.nih.gov↓5

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

    Modern Reference A · 92·Index A · 94·Academic
    A·92
12. 12
    U.S. Food and Drug Administrationfda.gov↓3

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

    Modern Reference A · 92·Index A · 94·Government
    A·92
13. 13
    U.S. National Oceanic and Atmospheric Administrationnoaa.gov↓2

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

    Modern Reference A · 92·Index A · 93·Government
    A·92
14. 14
    European Central Bankecb.europa.eu↓2

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

    Modern Reference A · 92·Index A · 93·Government
    A·92
15. 15
    European Commissionec.europa.eu

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

    Modern Reference A · 90·Index A · 92·Government
    A·90