Here are some examples:
* I just finished reading *The Great Gatsby*.
* Have you ever read *To Kill a Mockingbird*?
Quotes are used for titles of shorter works, like:
* Poems ("The Raven")
* Songs ("Bohemian Rhapsody")
* Short stories ("The Gift of the Magi")
* Chapters of books ("The Lottery")
Indentation is a formatting choice used to set apart paragraphs or sections of text. It isn't used for book titles.