Gude, K., & Duckworth, M. (2002). Matrix: Per - Intermediate Student's book. Oxford: Oxford Univ. Press.
シカゴスタイル引用形Gude, Kathy, , Michael Duckworth. Matrix: Per - Intermediate Student's Book. Oxford: Oxford Univ. Press, 2002.
MLA引用形式Gude, Kathy, , Michael Duckworth. Matrix: Per - Intermediate Student's Book. Oxford: Oxford Univ. Press, 2002.
警告: この引用は必ずしも正確ではありません.