Oxford English Dictionary Online.
The definitive record of the English language. To determine the meaning, use and history of a word.
A large collection of Reference sources, including
subject focused encyclopedia and dictionaries (e.g. Green's Dictionary of Slang)
collections of quotations (e.g. Brewer's Famous Quotations)
bilingual dictionaries (e.g. Pocket Oxford Italian Dictionary)
Although there is a strong focus on the Social Science terms and topics, this collection of encyclopedias, dictionaries and other works may inspire you.
Accurate and reliable resources on a variety of academic topics.