Dyfyniad APA
Barrett, H. (1973). Practical methods in speech. (3rd ed.). Rinehart Press.
Dyfyniad Arddull Chicago
Barrett, Harold. Practical Methods in Speech. 3rd ed. San Francisco: Rinehart Press, 1973.
Dyfyniad MLA
Barrett, Harold. Practical Methods in Speech. 3rd ed. Rinehart Press, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.