Reference Universe indexes reference books and electronic reference sources...

Online version of one of the most notable general encyclopedias ever published...

A perfect starting point for all things Canadian, including over 20,000 articles...

Online version of a standard one-volume encyclopedia; 6th edition (2001)...

General encyclopedia with more than 40,000 articles and more than 12,000 illustrations...

Spanish-language version of the Encyclopædia Britannica...

"Encyclopedia Smithsonian helps answer frequently asked questions about the Smithsonian with links to resources on subjects from Art to Zoology...

A free Internet "encyclopedia" made up of users' creations, each connected by multiple hotlinks to other Everything articles...

Provides over 25,000 encyclopedic entries, searchable by subject or keywords within the entry...

A collection of more than 175 dictionaries and encyclopedias from Oxford University Press...

Created by New Zealand's Ministry for Culture and Heritage to provide a comprehensive guide for the country...

"This encyclopedia features concise entries providing essential information on a range of subjects, including world affairs, science and technology, the arts, modern and ancient history, religion, sports, and popular culture...