Maria Pia “Imma Cutchoo” Gekas ’09 sent me this link like months ago and I forgot about it. But in the midst of writing a massive research paper I have again remembered it.
Ottobib.com allows you to plug in the ISBN of a book and it’ll spit out the citation. It doesn’t work for all books and sometimes has errors, but it’s useful.
Also, I recommend Easybib. That’s fun, too.