Brown, G. D., & Gillian D. Brown; Sally Rice. (2007). Professional English in use. Cambridge,New York: Cambridge University Press.
Παραπομπή Chicago StyleBrown, Gillian D., και Gillian D. Brown; Sally Rice. Professional English in Use. Cambridge,New York: Cambridge University Press, 2007.
Παραπομπή MLABrown, Gillian D., και Gillian D. Brown; Sally Rice. Professional English in Use. Cambridge,New York: Cambridge University Press, 2007.
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