Dyfyniad APA

LUCAS, S. E. (1989). The art of public speaking.-- Ed.3. McGraw-Hill Pub.

Dyfyniad Arddull Chicago

LUCAS, Stephen E. The Art of Public Speaking.-- Ed.3. New York: McGraw-Hill Pub, 1989.

Dyfyniad MLA

LUCAS, Stephen E. The Art of Public Speaking.-- Ed.3. McGraw-Hill Pub, 1989.

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