APA aipamena

Rogerson, P., & Gilbert, J. B. (1990). Speaking clearly: Pronunciation and listening comprehension for learners of English. Cambridge, England ; Melbourne, Vic.: Cambridge University Press.

Chicago Style aipamena

Rogerson, Pamela., và Judy B. Gilbert. Speaking Clearly: Pronunciation and Listening Comprehension for Learners of English. Cambridge, England ; Melbourne, Vic.: Cambridge University Press, 1990.

MLA aipamena

Rogerson, Pamela., và Judy B. Gilbert. Speaking Clearly: Pronunciation and Listening Comprehension for Learners of English. Cambridge, England ; Melbourne, Vic.: Cambridge University Press, 1990.