Credo Reference provides an online reference collection of over 617 reference books. This collection includes various dictionaries and encyclopedias, as well as a broad range of subject-specific titles. Illustrated works, as well as works on visual media and photography, are well represented
A database of the online versions of over 300 Oxford University Press subject-specific encyclopedias, dictionaries, handbooks, and other background sources. Many articles and entries are the work of scholars commissioned to write on a topic on which they have particular expertise. Includes reference sources in a wide variety of fields.