What Is MLA Style?
MLA style is a system for documenting sources in scholarly writing. For over half a century, it has been widely adopted for classroom instruction and used worldwide by scholars, journal publishers, and academic and commercial presses.
The ninth edition of the MLA Handbook, published in spring 2021, 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, social media posts, dissertations, and more. With this focus on source evaluation as the cornerstone of citation, MLA style promotes the skills of information and digital literacy so crucial today.
Source: https://www.mla.org/MLA-Style