Comment it's not that hard to use Wikipedia (Score 5, Insightful) 189
Especially if you are a professor you should know better. Wikipedia articles cite sources. Well, some of them do. If they don't, you should raise an eyebrow.
If you see a statement in a Wikipedia article that you are thinking of repeating or relying on for something, look first to see: does it cite a source? In this case it did not. In that case, stop here, you should probably not trust the statement. At least not if it's something that matters at all. If it does cite a source, then things are better, but there is still one more step before you should rely on it for anything more than barroom trivia (like, say, publishing an academic paper): you should probably take a glance at that source and see if it really says that.
Incidentally, this will help you use other reference works as well. There are a lot of errors in printed books as well, especially more popular books (those "Who's Who In the Roman World" type books are riddled with incorrect facts). The way to avoid being tripped up by them is to look for references first, and check references second. (How thoroughly to do so of course depends on what you're using the information for.)