Citations for e-books closely resemble those for physical books. Simply indicate that the book in question is an e-book by putting the term "e-book" in the "version" slot of the MLA template (i.e., after the author, the title of the source, the title of the container, and the names of any other contributors).

Silva, Paul J. How to Write a Lot: A Practical Guide to Productive Academic Writing. E-book, American Psychological Association, 2007.

If the e-book is formatted for a specific reader device or service, you can indicate this by treating this information the same way you would treat a physical book's edition number. Often, this will mean replacing "e-book" with "[App/Service] ed."

Machiavelli, Niccolo. The Prince, translated by W. K. Marriott, Kindle ed., Library of Alexandria, 2018.

When citing an e-book in your text, avoid using device-specific numbering systems. See section 3.3.3 for suggestions on alternative ways to identify the parts of a work. Review the MLA Style Guide for more help.