Richards, J. C. (1990). Interchange: English for international communication : Teacher's manual. New York, US: Cambridge University Press.
シカゴスタイル引用形Richards, Jack C. Interchange: English for International Communication : Teacher's Manual. New York, US: Cambridge University Press, 1990.
MLA引用形式Richards, Jack C. Interchange: English for International Communication : Teacher's Manual. New York, US: Cambridge University Press, 1990.
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