Sometimes you need a definition, or statistic, or basic fact for you paper that you can't find in a scholarly article. What can make this double frustrating is that sometimes you can find the fact in Wikipedia, but you cannot use Wikipedia in your paper. (See Using Wikipedia for more on how to use this popular resource effectively.)
You can find specialized encyclopedia and dictionaries in:
Access all Oxford's dictionaries, companions, and encyclopedias in one place.
Oxford Reference is a multi-disciplinary database that features a range of short entries, timelines, quotations, and lengthy in-depth reference articles on all topics. Browse by subject or enter a keyword in the search box.