Sullivan, P. N., & Qiu Zhong, G. Y. (1989). TOEFL skills for top scores. ARCO.
シカゴスタイル引用形Sullivan, Patricia Noble, , Grace Yi Qiu Zhong. TOEFL Skills for Top Scores. New York: ARCO, 1989.
MLA引用形式Sullivan, Patricia Noble, , Grace Yi Qiu Zhong. TOEFL Skills for Top Scores. ARCO, 1989.
警告: この引用は必ずしも正確ではありません.