APA Citation

(1989). Listening to toefl: An official toefl study aid. New York: Educational Testing Service.

Trích dẫn kiểu Chicago

Listening to Toefl: An Official Toefl Study Aid. New York: Educational Testing Service, 1989.

MLA Citation

Listening to Toefl: An Official Toefl Study Aid. New York: Educational Testing Service, 1989.

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