Richards, J. C., Hull, J., & Proctor, S. (1997). New Interchange Vol. 1: English for international communication. Cambridge University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRichards, Jack C., Jonathan Hull, और Sussan Proctor. New Interchange Vol. 1: English for International Communication. Cambridge: Cambridge University Press, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRichards, Jack C., et al. New Interchange Vol. 1: English for International Communication. Cambridge University Press, 1997.
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