Dyfyniad APA

Barrett, H. (1981). Speaking practically. Holt Rinehart & Winstor.

Dyfyniad Arddull Chicago

Barrett, Harold. Speaking Practically. New York: Holt Rinehart & Winstor, 1981.

Dyfyniad MLA

Barrett, Harold. Speaking Practically. Holt Rinehart & Winstor, 1981.

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