Main Article Databases
- Philosopher’s Index: Identifies journal articles, books, and book chapters on all aspects of philosophy. Indexes publications from 1902-present.
- PhilPapers: Identifies articles in philosophy journals, books, websites, and other kinds of publications found on the Internet. Also a digital repository.
- : Selected, annotated bibliographies, arranged by broad topic. Oxford Bibliography of Philosophy
- : 78 titles from the philosophy series. Oxford Handbooks Online
- Philosophy: Guide to Library Research
Main Reference Works
- Encyclopedia of Philosophy: 2nd ed. Online version of the 12 volume original. Detailed, signed entries. Bibliographies list both primary and secondary sources, but are not annotated.
- Stanford Encyclopedia of Philosophy: Detailed, signed entries. Bibliographies list both primary and secondar sources. Bibliographies not annotated, but the bibliographies of secondary sources do identify standard critical editions, where available.
- Routledge Encyclopedia of Philosophy: Detailed, signed entries. Bibliographies list both primary and secondary sources. Bibliographies are briefly annotated. Bibliographies of primary sources are especially useful for identifying standard critical editions.