APA (7e ed.) Bronvermelding

Boston Science Communications and Towers Productions, PBS Video, Del Guercio, G., Mabile, T., Alexander, S., & Robinson, R. (2007). 22nd century. PBS Home Video.

Chicago (17e ed.) Bronvermelding

Boston Science Communications and Towers Productions, PBS Video, Gino Del Guercio, Tresha Mabile, Scott Alexander, en Robin Robinson. 22nd Century. [Arlington, Va.]: PBS Home Video, 2007.

MLA (9e ed.) Bronvermelding

Boston Science Communications and Towers Productions, et al. 22nd Century. PBS Home Video, 2007.