Dyfyniad APA

Lucas, S. E. (1995). The art of public speaking (5th ed.). McGraw hill.

Dyfyniad Arddull Chicago

Lucas, Stephen E. The Art of Public Speaking. 5th ed. New York: McGraw hill, 1995.

Dyfyniad MLA

Lucas, Stephen E. The Art of Public Speaking. 5th ed. McGraw hill, 1995.

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