Presentation is a show. Presentation shall be catchy. Presentations are there to sell the presenter's products. Presentations are fluent, one-way only. From the ouverture to the grand finale.
In academia you are selling your results, your department, your research. The show here is not fancy, full of fireworks and othe ballast, but it is still a show.
Long lists of anything is a show killer, references doubly so. You want the audience's attention and curiosity first, then you can comunicate your results. You can back your claims thoroughly later; on stage you want to talk about your contribution, not the others'.
If you need to show references and citations, do it at the time you talk about it. No one cares for referencing idea two minutes ago. A footnote is appropriate. You don't mention it in your speech but they who will read your slides later will fing the reference in eyblink; if you would be asked, you can show both your claim and the reference in Q&A minutes.
Another trick is to have couple of uncounted slides with extras. Bigger graphs, detailed images, claims and references - just in case. You can build your presentation in beamer, build your supporting appendix and merge the pdfs. I think you can trick the LaTeX/beamer by using
Sidenote: I think this is your first presentation. Try the presentation many times. Try to present it to your friends/colleagues even pets or a rubber duck.
Make yourself comfortable, find the structure, language and pace you are comfortable with (and fit within the time limit).