Dyfyniad APA

Rogerson, P., & Gilbert, J. B. (1993). Speaking clearly: Pronunciation and listening comprehension for learners of English, student's book. Cambridge University Press.

Dyfyniad Arddull Chicago

Rogerson, Pamela, and Judy B. Gilbert. Speaking Clearly: Pronunciation and Listening Comprehension for Learners of English, Student's Book. Cambridge, Eng: Cambridge University Press, 1993.

Dyfyniad MLA

Rogerson, Pamela, and Judy B. Gilbert. Speaking Clearly: Pronunciation and Listening Comprehension for Learners of English, Student's Book. Cambridge University Press, 1993.

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