Dyfyniad APA

Lucas, S. E., & Stob, P. (2020). The art of public speaking (13th ed.). New York: McGraw Hill.

Dyfyniad Arddull Chicago

Lucas, Stephen E., và Paul Stob. The Art of Public Speaking. 13th ed. New York: McGraw Hill, 2020.

Dyfyniad MLA

Lucas, Stephen E., và Paul Stob. The Art of Public Speaking. 13th ed. New York: McGraw Hill, 2020.

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