Richards, J. C., Hull, J., & Proctor, S. (1997). New interchange: English for international communication: level 1 student's book. Cambridge University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRichards, Jack C., Jonathan Hull, और Susan Proctor. New Interchange: English for International Communication: Level 1 Student's Book. Cambridge: Cambridge University Press, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRichards, Jack C., et al. New Interchange: English for International Communication: Level 1 Student's Book. Cambridge University Press, 1997.
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