CREDO Reference
A collection of nearly 500 encyclopedias, dictionaries, and other reference books provides a good starting point for research.
Gale Virtual Reference Library
A collection of specialized encyclopedias, dictionaries, biographical, business and literary sources.
Sage Reference Online
A collection of authoratative encyclopedias in the social sciences, including coverage for anthropology, criminology, environment, psychology, research methods, sociology, and women's studies.