Reference — scored on the SourceScore Index

4 sources in the reference category, ranked by SourceScore Index. Average Index across this category: 90.

1. #1
   Wikipedia (English)

   en.wikipedia.org

   Crowd-edited encyclopedia with ~7M articles and per-article inline citation discipline.
   A·94
2. #2
   MDN Web Docs

   developer.mozilla.org

   Mozilla-stewarded web-platform reference since 2005; default citation for HTML, CSS, JS, Web APIs.
   A·93
3. #3
   Stanford Encyclopedia of Philosophy

   plato.stanford.edu

   Peer-reviewed philosophy encyclopedia since 1995; gold-standard philosophy reference.
   A·89
4. #4
   Encyclopædia Britannica

   britannica.com

   Editor-supervised encyclopedia with named contributors + editorial-board oversight; complement to Wikipedia's crowd-edited model.
   A·85