MLA Handbook Plus This link opens in a new windowThe MLA Handbook is the only official, authorized book on MLA format. The ninth edition builds on the MLA’s unique approach to documenting sources using a template of core elements—facts, common to most sources, like author, title, and publication date—that allows writers to cite any type of work, from books, e-books, and journal articles in databases to song lyrics, online images, YouTube videos, dissertations, and more.