Do You Need to Underline the Title of a Book

In english depending on what style or format that you writing in such as MLA, APA, Chicago, etc. When writing a works cited page for MLA yes the title of the book does have to be underlined when writing by hand or it can be italicized when typing. The reason the title of a book has to be underlined is because it is a longer written works. Longer written works include books, movies, music .