Q. In a PowerPoint presentation made in AMA format, should I include references on my slides?
The AMA Style Manual is only concerned with publication and is silent on presentations. Generally, we (the assembled wisdom of the librarians) would recommend citations below any visual extracted from another source. If you include a table from the CDC, the table should be cited on that slide. As for text or bullet points, the Manual recommends superscript and numbered references at the end, which in a slide deck can be ungainly. It provides for brief in text parenthetical citations but limits its use to news articles and obituaries, which would not need a reference list. I cannot remember seeing a presentation that did not have the references at the end.
"Preparing an Article for Publication", References 3.3, 3.5, 3.6
Before you put too much energy into this, ask the instructor his or her preference for the presentation citation. It is a fair question and it will be an indication that you have looked at the Manual.