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