Sometimes writing a bibliography with all the formatting rules is not an easy task. There are some links to help you get it done right.

1. OttoBib. This handy little browser app takes the ISBN [International Standard Book Numbers] of the books you want to reference and changes that into one of three formats, MLA, APA, or Chicago/Turabian. That’s it, instant references.
OttoBib accepts both ISBN-10 and ISBN-13, and will also spit out a permalink of the results so you don’t have to enter the numbers again.

2. is a little better at times - you might have to input more, but it handles the formatting better. And allows you to include all your non-book sources like periodicals and web sources.

If you know any other good bibliography generator sites you want to share, let me know by posting a comment.