APA Citation

Kirby,Stephen, & Key, P. (1985). Penguin listening skills: Student's book. New York: Penguin books.

Trích dẫn kiểu Chicago

Kirby,Stephen, và Patty Key. Penguin Listening Skills: Student's Book. New York: Penguin books, 1985.

MLA Citation

Kirby,Stephen, và Patty Key. Penguin Listening Skills: Student's Book. New York: Penguin books, 1985.

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