I also wanted to chime in on the punctuation question that DR Vixmom asked yesterday and that DR derBrucer answered exactly as I would have:
If something is a whole work (book, periodical, play, etc.) - italicize or underline; if it's a part of a whole (chapter in a book, article in a periodical, song in a musical, etc.), put in quotes.
In a past life, I taught the ins and outs of the various bibliographic styles - APA, MLA, Turabian, etc. - and truly enjoyed it. Call me a geek.