There are no official instructions for formatting a PowerPoint presentation or slideshow in the APA style. However, most colleges/universities, professionals, and educators follow the general guidelines for formatting their slideshows in the APA style:
Include an in-text citation for every slide in which you paraphrase, quote, or summarize information from one of your sources: (Author, year). Place this citation in the bottom right corner of your slides.
Include a references slide(s) at the end using the same format as an APA-formatted references page.
See the examples below. Use the arrows to move through the slides.