A large, online encyclopedia. Since it is publicly edited, do not site it in a paper's bibliography, it does not count as a source. It is, however, a great place to get the background on your subject, and a great place to get links and references to reputable sites.
For my paper on the 1960's, I started at wikipedia and ended up at a reliable site that really helped me out.
by reality is so overrated February 07, 2008