Cook, A. (1991). American Accent Training: A Guide to Speaking and Pronouncing Colloquial American English. New York: Barron.
Trích dẫn kiểu ChicagoCook, Ann. American Accent Training: A Guide to Speaking and Pronouncing Colloquial American English. New York: Barron, 1991.
Deismireacht MLACook, Ann. American Accent Training: A Guide to Speaking and Pronouncing Colloquial American English. New York: Barron, 1991.
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