how to cite lecture slides apa. In APA format, a PowerPoint presentation should be cited by its author (the person who gave the presentation), the date it was given, the title (in italics), the number of slides given in the presentation (in square brackets), the presenting department and university, and the URL where the presentation can be found.

Your readers may not have access to the PowerPoint presentation; in this case, please reference the information as a personal communication. It is important to note that the citation format for a video of a presentation (like a TED Talk) differs from that used for a direct quotation from a speech.
Include a PowerPoint presentation in your reference list only if your reader has access to it.
PowerPoint presentations accessible only by authorized users
To access a file on your university’s LMS, you’ll typically need to log in (e.g. Blackboard, Canvas). Include the login page rather than the precise location of the PowerPoint in this case.
Referring to an inaccessible PowerPoint presentation
Cite the PowerPoint as a personal communication if your readers won’t be able to view it.
A lot of this is determined by who your target audience is for the paper. You can use the standard format when citing a PowerPoint presentation that is hosted on your university’s Blackboard site, as your professor will have easy access to the slides.
Since the journal’s readers won’t have access to the PowerPoint, referencing it in a journal paper requires labeling it as “personal communication.”
Include personal communications in the text only, not the reference list.
