A citation for an online video has "Video file" in square brackets after title. Note that the author of a video posted on YouTube or a similar site is generally presumed to be the person who posted the video. Notice that YouTube is treated as a publication similar to a magazine, which is why the URL given is that of YouTube’s homepage.
Template:
Author/Poster A. A. (Year, Month Day). Title of video [Video file]. Retrieved from http://...
Example:
Cummins, Bart (2010, January 16). TRU service-learning 100 all videos [Video file]. Retrieved from http://youtube.com
If the author/poster uses a screen name but you know their real name, alphabetize the reference by the real name and put the screen name in square brackets.
Template:
Author/Poster A. A. [Screen Name]. (Year, Month Day). Title of video [Video file]. Retrieved from http://...
Example:
Richards, A. [adriarichards]. (2011, June 4) Camtasia Studio, Snagit and Jing review [Video file]. Retrieved from http://www.youtube.com/watch?v=wpUonhKub-Q
If the author/poster uses a screen name and you do not know his or her real name, alphabetize the reference by the screen name.
Template:
Screen name. (Year, Month Day). Title of video [Video file]. Retrieved from http://...
Example:
Browseroperations. (2011, December 22). Tile Tabs - Firefox extension in action [Video file]. Retrieved from http://www.youtube.com/watch?v=HPO3wGM9qXw