Dyfyniad APA
Jeffrey, R. C., & Peterson, O. (1983). Speech: A basic text (2nd ed.). Harper.
Dyfyniad Arddull Chicago
Jeffrey, Robert C., and Owen Peterson. Speech: A Basic Text. 2nd ed. New York: Harper, 1983.
Dyfyniad MLA
Jeffrey, Robert C., and Owen Peterson. Speech: A Basic Text. 2nd ed. Harper, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.