Reference works, i.e. encyclopedias and dictionaries, are an excellent source of facts, dates, events, biographies, explanations, surveys, bibliographies, and general overviews. Use these to start your research or for quick answers to satisfy your curiosity.
Sage Knowledge provides full-text of major reference works published by Sage Publications.
Oxford Reference Online
Large database of classic Oxford reference works. Lots of history reference included in this database.
Gale Virtual Reference Library
Database of dozens of encyclopedias and other reference works. Covers reference materials in the humanities, social sciences, and sciences. Includes many excellent encyclopedias of religion.
Credo Reference provides access to a large number of encyclopedias, dictionaries, thesauri and other reference books. Subjects covered include art, biography, history, literature, music, religion, and science and technology.
Encyclopaedia Britannica provides information and instructional products used in schools, universities, homes, libraries, and workplaces throughout the world. Britannica is online, in e-books, and on mobile devices.