Dyfyniad APA

Lucas, S. (2004). The art of public speaking (8th ed.). Boston: McGraw-Hill.

Dyfyniad Arddull Chicago

Lucas, Stephen. The Art of Public Speaking. 8th ed. Boston: McGraw-Hill, 2004.

Dyfyniad MLA

Lucas, Stephen. The Art of Public Speaking. 8th ed. Boston: McGraw-Hill, 2004.

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