APA (7th ed.) Citation

Sullivan & Zhong, G. Y. Q. (1989). TOEFL skills for top scores. Arco : Distributed by Prentice Hall Trade.

Chicago Style (17th ed.) Citation

Sullivan and Grace Yi Qiu Zhong. TOEFL Skills for Top Scores. New York: Arco : Distributed by Prentice Hall Trade, 1989.

MLA (9th ed.) Citation

Sullivan and Grace Yi Qiu Zhong. TOEFL Skills for Top Scores. Arco : Distributed by Prentice Hall Trade, 1989.