When writing a paper and you say in the book "Ann Frank" the author uses......

Is the title of the book italized or is italized and in quotes?

When mentioning a book title in a paper, it is customary to italicize the title. In the case of Anne Frank's book, "The Diary of a Young Girl," the title should be italicized. However, if you are hand-writing your paper and do not have the capability to italicize, you can underline the book title instead. This helps to distinguish the title from the rest of the text and indicates that you are referring to a specific work.