do you underline or put in quotes the name of a book? What about it's subtitle?

Answer 1

underline a book name and put a poems name in quotes

Answer 2

And what about the subtitle? That also gets underlined? This is for a PowerPoint btw, so does all this still hold true?

Answer 3

for subtitles, do a : and then the subtitle which is also underlined. For powerpoint, I'm not sure, but I would just to be safe. Never hurts.