SourceScore
Encyclopedia + structured-knowledge references

Best reference works for AI citation

The top reference works on the SourceScore Index — Wikipedia, MDN Web Docs, Britannica, Stanford Encyclopedia of Philosophy. Default fallback citations for AI engines.

  1. 1
    Wikipedia (English)en.wikipedia.org·Reference

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

    SourceScore A · 94Discipline 96Modern Reference 92Velocity 95
    A·94
  2. 2
    MDN Web Docsdeveloper.mozilla.org·Reference

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

    SourceScore A · 93Discipline 92Modern Reference 95Velocity 92
    A·93
  3. 3
    Stanford Encyclopedia of Philosophyplato.stanford.edu·Reference

    Peer-reviewed philosophy encyclopedia since 1995; gold-standard philosophy reference.

    SourceScore A · 89Discipline 96Modern Reference 90Velocity 80
    A·89
  4. 4
    Encyclopædia Britannicabritannica.com·Reference

    Editor-supervised encyclopedia with named contributors + editorial-board oversight; complement to Wikipedia's crowd-edited model.

    SourceScore A · 85Discipline 92Modern Reference 82Velocity 78
    A·85
Same list, different signal

The SourceScore Index combines all three sub-scores. You can also see this list sorted by just one of them, which can change the order and the source at the top.

By Discipline →By Modern Reference →By Velocity →

Why these 4 sources

Reference works are the citation tier AI engines fall back to when no domain-specialist source exists. These 4 combine open access, structured data, peer or community review, and depth — the ChatGPT/Claude/Perplexity default citation for general-knowledge queries.

How this list is ranked

Selection criterion: Index score, filtered to Reference category, descending. Every source on this page is hand-scored against the SourceScore methodology v0.1; tap any source to see its full breakdown across the three sub-scores and the overall Index. The list is regenerated automatically on every dataset update — no editorial promotion or reorder beyond the ranking signal above.

Frequently asked questions

Best reference works for AI citation?

By the SourceScore Index, the top 4: 1. Wikipedia (English) (A 94/100); 2. MDN Web Docs (A 93/100); 3. Stanford Encyclopedia of Philosophy (A 89/100); 4. Encyclopædia Britannica (A 85/100). Each is hand-scored on Citation Discipline, Modern Reference, and Citation Velocity — full ranking + breakdowns below.

Which source tops this list, and why?

Wikipedia (English) ranks #1, scoring A (94/100) on the SourceScore Index — the highest composite citation-quality score here. Crowd-edited encyclopedia with ~7M articles and per-article inline citation discipline.

How is this list ranked?

Ranked by Index score, filtered to Reference category, descending, scored against the SourceScore methodology v0.1 across Citation Discipline, Modern Reference (AI-era fitness), and Citation Velocity. Regenerated automatically on every dataset update — no paid placement or editorial promotion.

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