Sullivan, P. N., & Zhong, G. Y. Q. (1989). TOEFL skills for top scores. Arco.
Chicago Style (17th ed.) CitationSullivan, Patricia N., and Grace Yi Qiu Zhong. TOEFL Skills for Top Scores. New York: Arco, 1989.
MLA (9th ed.) CitationSullivan, Patricia N., and Grace Yi Qiu Zhong. TOEFL Skills for Top Scores. Arco, 1989.
Warning: These citations may not always be 100% accurate.