Richards, J. C., Hull, J., & Proctor, S. (1994). Interchange: English for international communication. Đà Nẵng : New York: NXb. Đà Nẵng; Cambridge University Press.
Trích dẫn kiểu ChicagoRichards, Jack C., Jonathan Hull, và Susan Proctor. Interchange: English for International Communication. Đà Nẵng : New York: NXb. Đà Nẵng; Cambridge University Press, 1994.
Deismireacht MLARichards, Jack C., Jonathan Hull, và Susan Proctor. Interchange: English for International Communication. Đà Nẵng : New York: NXb. Đà Nẵng; Cambridge University Press, 1994.
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