Richards, J. C., & Gordon, D. B. (1999). New interchange Intro: English for international communication : video teacher's guide (Revised for use with New Interchange.). Cambridge: Cambridge University Press.
शिकागो स्टाइल उद्धरणRichards, Jack C., और Deborah B. Gordon. New Interchange Intro: English for International Communication : Video Teacher's Guide. Revised for use with New Interchange. Cambridge: Cambridge University Press, 1999.
एमएलए उद्धरणRichards, Jack C., और Deborah B. Gordon. New Interchange Intro: English for International Communication : Video Teacher's Guide. Revised for use with New Interchange. Cambridge: Cambridge University Press, 1999.
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