Q. How do I cite a Powerpoint file in MLA format?

Cite it as a "digital file."  Examples can be found on The OWL @ Purdue.

This example below shows what components are needed, while you will need to make sure that you change the name of the file type.

Smith, George. “Pax Americana: Strife in a Time of Peace.” 2005. Microsoft Word file.

For more information on MLA format use our Research Guide on citing.