The Library has several copies of the MLA handbook, including the latest 9th edition, to help you cite your sources.
Many databases that the Library subscribes to can show you automated citations for the article you found.
This is a great shortcut but be aware that the citation is not always correct (i.e. wrong capitalization, incorrect punctuation, missing elements, etc.). Be sure to check the citation and verify that it follows the format of the most current version of MLA.