When using media for presentations, even if it is an openly licensed resource, we still need to give proper attribution to the creator. With Creative Commons licenses, attribution is actually a requirement of use.
A commonly accepted attribution format in the open community is the TASL acronym. It's a bit less specific than APA or MLA format, but every attribution should have the following components and answer each question in italics. Where possible, link to the original components and do include any additional information if it feels relevant or useful.
Title (T) - What is the name of the material?
Author (A) - Who owns the material?
Source (S) - Where can I find it?
License (L) - How can I use it?

Example of Best Practices for Attribution Using TASL:
"Creative Commons 10th Birthday Celebration San Francisco" by tvol is licensed under CC BY 2.0.
Title? "Creative Commons 10th Birthday Celebration San Francisco"
Author? "tvol" - linked to his profile page
Source? "Creative Commons 10th Birthday Celebration San Francisco" - linked to original Flickr page
License? "CC BY 2.0" - linked to license deed
This example is from the Best Practices for Attribution page on the Creative Commons wiki. It's used with permission thanks to a CC BY 4.0 international license.
It is also possible to use the MLA or APA format to cite content and provide appropriate attribution. Just include the license after the correct MLA or APA citation, as shown in the examples below.
APA Style References Example (7th Edition)
Vollmer, T. (2012, December 8). Creative Commons 10th Birthday Celebration San Francisco [Photograph]. Flickr. https://www.flickr.com/photos/sixteenmilesofstring/8256206923/in/set-72157632200936657. CC BY 2.0 license.
APA Style Attribution / In-Text Example (7th Edition)
T. Vollmer, 2012 (https://www.flickr.com/photos/sixteenmilesofstring/8256206923/in/set-72157632200936657). CC BY 2.0.
MLA Style Works Cited Example (8th Edition)
Vollmer, Timothy. "Creative Commons 10th Birthday Celebration San Francisco." Flickr, 8 Dec. 2012, https://www.flickr.com/photos/sixteenmilesofstring/8256206923/in/set-72157632200936657. CC BY 2.0 license.