Gilbert, J. B. Clear speech. Pronunciation and listening comprehension in american english. Student´s book (4a ed.).
Chicago Style (17. basım) AtıfGilbert, Judy B. Clear Speech. Pronunciation and Listening Comprehension in American English. Student´s Book. 4a ed.
MLA (8th ed.) AtıfGilbert, Judy B. Clear Speech. Pronunciation and Listening Comprehension in American English. Student´s Book. 4a ed.
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