American Psychological Association style requires that both references list and in-text citations of PowerPoint presentations include the author's last name and the date of presentation. However, the information in a references list citation will depend on whether you can access the slides of the presentation. Check whether you have access to the information in the presentation before you include it in your references list.
Retrievable Lecture Notes
If you have access to the slides of a PowerPoint presentation online, for example, through a class website, use the following format in your references list:
Author's last name, first Initial(s). (Year of presentation). Title of presentation: Subtitle if applicable [PowerPoint slides]. Retrieved from URL.
Smith, M. (2006) Hinduism [PowerPoint slides]. Retrieved from http://www.worldofteaching.com/religionpowerpoints.html.
If you do not have access to the PowerPoint presentation that you are referencing, you should instead cite it as though it was a conference proceeding, using the following format:
Author's last name, first initial(s). (Year of presentation). Title of presentation: Any subtitles. PowerPoint presentation at the meeting of organization's name, presentation's location.
Jones, M.C. (2009). Step up to the plate. PowerPoint presentation at the meeting of Franchise Foods International, London, UK.
The APA citation style also requires you to cite your sources when you reference them in the body of your text. This is done through an in-text citation. You can include the in-text citation in parentheses after the sentence in which you reference or quote your source. The in-text citation should include the last name of your source's author and the year of the presentation, formatted as follows:
Karma and reincarnation are two of the basic beliefs of Hinduism (Smith, 2006).
You can also include the in-text citation as part of the sentence, using a signal phrase. Here's an example:
In his PowerPoint presentation, Smith (2006) identifies karma and reincarnation as two basic beliefs of Hinduism.