Dyfyniad APA

Gilbert, J. B. (1986). Clear Speech: Pronunciation and Listening Comprehension in American English, Student"s Book. New York: Cambridge University Press.

Dyfyniad Arddull Chicago

Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in American English, Student"s Book. New York: Cambridge University Press, 1986.

Dyfyniad MLA

Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in American English, Student"s Book. New York: Cambridge University Press, 1986.

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