APA引文

LISTENING. (1989). Listening to Toefl. Educational Testing Service.

Chicago Style (17th ed.) Citation

LISTENING. Listening to Toefl. Princeton: Educational Testing Service, 1989.

MLA引文

LISTENING. Listening to Toefl. Educational Testing Service, 1989.

警告：這些引文格式不一定是100％准確.