Richards, J. C. (1994). Interchange: English for international communication : Student's book. Đà Nẵng: Nxb. Đà Nẵng.
シカゴスタイル引用形Richards, Jack C. Interchange: English for International Communication : Student's Book. Đà Nẵng: Nxb. Đà Nẵng, 1994.
MLA引用形式Richards, Jack C. Interchange: English for International Communication : Student's Book. Đà Nẵng: Nxb. Đà Nẵng, 1994.
警告: この引用は必ずしも正確ではありません.