Rogerson, P., & Gilbert, J. B. (1990). Speaking clearly: Pronunciation and listening comprehension for learners of English. Cambridge, England ; Melbourne, Vic.: Cambridge University Press.
استشهاد بنمط شيكاغوRogerson, Pamela., و Judy B. Gilbert. Speaking Clearly: Pronunciation and Listening Comprehension for Learners of English. Cambridge, England ; Melbourne, Vic.: Cambridge University Press, 1990.
MLA استشهادRogerson, Pamela., و Judy B. Gilbert. Speaking Clearly: Pronunciation and Listening Comprehension for Learners of English. Cambridge, England ; Melbourne, Vic.: Cambridge University Press, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.