Dyfyniad APA

Stephen E.Lucas. (2004). The Art of Public Speaking (8th.). The McGraw Hill Companies.

Dyfyniad Arddull Chicago

Stephen E.Lucas. The Art of Public Speaking. 8th. New York: The McGraw Hill Companies, 2004.

Dyfyniad MLA

Stephen E.Lucas. The Art of Public Speaking. 8th. The McGraw Hill Companies, 2004.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.