APA (7th ed.) Citation

Sullivan, P. N., & Zhong, G. Y. Q. (1989). TOEFL skills for top scores. ARCO.

Chicago Style (17th ed.) Citation

Sullivan, Patricia Noble, and Grace Yi Qui Zhong. TOEFL Skills for Top Scores. New York: ARCO, 1989.

MLA (9th ed.) Citation

Sullivan, Patricia Noble, and Grace Yi Qui Zhong. TOEFL Skills for Top Scores. ARCO, 1989.