Really useful, but please tell me the author of this article, as it is really hard for student to write a bibliography when half the sites don't state the author!
Moderator's reply: Thank you for visiting wiseGEEK! The article details, including the author's name, can be found on every wiseGEEK article. Look for the box labeled "Article Details" to the left of the article. Thanks again for visiting wiseGEEK!