Dyfyniad APA
Cook, . J. S. (1989). The element of speechwriting and public speaking. Macmillan.
Dyfyniad Arddull Chicago
Cook, Jeff Scott. The Element of Speechwriting and Public Speaking. New York: Macmillan, 1989.
Dyfyniad MLA
Cook, Jeff Scott. The Element of Speechwriting and Public Speaking. Macmillan, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.