Richards, J. C., Hull, J., & Proctor, S. (2005). New Interchange 2: English for international communication. Workbook. United Kingdom: Cambridge University Press.
Παραπομπή Chicago StyleRichards, Jack C., Jonathan Hull, και Susan Proctor. New Interchange 2: English for International Communication. Workbook. United Kingdom: Cambridge University Press, 2005.
Παραπομπή MLARichards, Jack C., Jonathan Hull, και Susan Proctor. New Interchange 2: English for International Communication. Workbook. United Kingdom: Cambridge University Press, 2005.
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