Check to make sure all words of more than three letters are capitalized, excluding smaller words such as "and, in, or, of or the."
Check the first word of the title. The word should be capitalized no matter what it is.
Check for punctuation in the title. Usually, unless there's a quote, there will not be any ending punctuation in a book title.
Make sure all apostrophes are placed appropriately.
Italicize the book title if you are adding it to a reference list or works cited page. Leave it in regular text if you're creating a book title for a manuscript you have written.