Black, M. (2006). Objective IELTS Student's Book. Intermediate. Cambridge University Press.
シカゴスタイル引用形Black, Michael. Objective IELTS Student's Book. Intermediate. Cambridge University Press, 2006.
MLA引用形式Black, Michael. Objective IELTS Student's Book. Intermediate. Cambridge University Press, 2006.
警告: この引用は必ずしも正確ではありません.