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