Answered By: Mary Kaye Hooker Last Updated: Sep 12, 2018 Views: 362
You can use the citation example for presentation/slide or computer software following the Purdue OWL APA citation guide page on electronic resources here
Purdue OWL says
Online Lecture Notes and Presentation Slides
When citing online lecture notes, be sure to provide the file format in brackets after the lecture title (e.g. PowerPoint slides, Word document).
Hallam, A. Duality in consumer theory [PDF document]. Retrieved from Lecture Notes Online Web site: http://www.econ.iastate.edu/classes/econ501/Hallam/
Roberts, K. F. (1998). Federal regulations of chemicals in the environment [PowerPoint slides]. Retrieved from http://siri.uvm.edu/ppt/40hrenv/index.html