MLA format is used for papers in the humanities and requires in-text citations and a Works Cited list at the end. The in-text citations consist of the author's last name and relevant page number. The Works Cited list alphabetizes sources by the author's last name and includes required information about each work such as the author, title, and publication details. Proper use of MLA format is important for credibility and requires careful proofreading to ensure all sources are properly cited.