Judy B Gilbert. (1993). Clear speech - student's book: Pronunciation and listening comprehension in North American English. Cambridge, UK: Cambridge University Press.
استشهاد بنمط شيكاغوJudy B Gilbert. Clear Speech - Student's Book: Pronunciation and Listening Comprehension in North American English. Cambridge, UK: Cambridge University Press, 1993.
MLA استشهادJudy B Gilbert. Clear Speech - Student's Book: Pronunciation and Listening Comprehension in North American English. Cambridge, UK: Cambridge University Press, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.