Richards, J. C., & Jack C. Richards. (2005). Interchange. Cambridge,New York: Cambridge University Press.
Čikaški stil citiranjaRichards, Jack C., i Jack C. Richards. Interchange. Cambridge,New York: Cambridge University Press, 2005.
MLA način citiranjaRichards, Jack C., i Jack C. Richards. Interchange. Cambridge,New York: Cambridge University Press, 2005.
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