When writting an essay how do I enter a book title?

How do I insure that I am grammatically correct when I enter the title of a book into a paragraph in an essay I am writing?

Bellatrix2010-09-05T09:15:24Z

Favorite Answer

From my high school essay writing experience, either italicizing or underlining the book title is acceptable.
You should check an online guide, because it may differ whether you use MLA, APA, whatever.

Ms. Awesome2010-09-05T09:15:39Z

Underline it. And stay consistent throughout the rest of your essay. Meaning that, if you cite another book title, underline that too, don't do something different like italicize it.