Richards, J. C., & Sandy, C. (1998). New interchange 1: English for international communication : video teacher's guide (Revised for use with New Interchange.). Cambridge: Cambridge University Press.
শিকাগো স্টাইলে সাইটেশনRichards, Jack C., এবং Chuck Sandy. New Interchange 1: English for International Communication : Video Teacher's Guide. Revised for use with New Interchange. Cambridge: Cambridge University Press, 1998.
এমএলএ সাইটেশনRichards, Jack C., এবং Chuck Sandy. New Interchange 1: English for International Communication : Video Teacher's Guide. Revised for use with New Interchange. Cambridge: Cambridge University Press, 1998.
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