Stanford Encyclopedia of Philosophy is a reference work on philosophy maintained by Stanford University. Each encyclopedia entry is authored and updated by an expert or group of experts in their field.
Cambridge Companions [via Cambridge Collections Online] contains full text books and chapter extracts. It includes Cambridge Companions in Literature and Classics; the Cambridge Companions in Philosophy, Religion and Culture; and the Companions in Music.
Gale Virtual Reference Library is a database of encyclopedias and reference sources for multidisciplinary research. Because each library creates its own eBook collection, the content you see may vary if the database is accessed from different libraries.
Oxford Reference Online includes subject and language reference sources from Oxford University Press, including many titles from the Oxford Companions Series. Browse or search single titles, specific subject areas, or the entire collection.