Greenall, S. (1997). Reward: Elementary. Student's book. Macmillan Heinemann.
Chicagoスタイル(17版)引用形式Greenall, Simon. Reward: Elementary. Student's Book. Oxford: Macmillan Heinemann, 1997.
MLA(9版)引用形式Greenall, Simon. Reward: Elementary. Student's Book. Macmillan Heinemann, 1997.
警告: この引用は必ずしも正確ではありません.