Dyfyniad APA

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

Dyfyniad Arddull Chicago

Lucas, E. Stenphen. The Art of Public Speaking. Boston: McGraw-Hill, 2004.

Dyfyniad MLA

Lucas, E. Stenphen. The Art of Public Speaking. Boston: McGraw-Hill, 2004.

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