Handford, M., Koester, A., Lisboa, M., & Pitt, A. (2012). Business advantage: Upper-intermediate Class audio CDs. Cambridge: Cambridge University Press.
Chicago Style aipamenaHandford, Michael., Almut Koester, Martin Lisboa, và Angela Pitt. Business Advantage: Upper-intermediate Class Audio CDs. Cambridge: Cambridge University Press, 2012.
MLA aipamenaHandford, Michael., Almut Koester, Martin Lisboa, và Angela Pitt. Business Advantage: Upper-intermediate Class Audio CDs. Cambridge: Cambridge University Press, 2012.
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