Dyfyniad APA

Trappe, T. (2009). Intelligent business coursebook upper intermadiate. Oxford University Press.

Dyfyniad Arddull Chicago

Trappe, Tonya. Intelligent Business Coursebook Upper Intermadiate. Oxford University Press, 2009.

Dyfyniad MLA

Trappe, Tonya. Intelligent Business Coursebook Upper Intermadiate. Oxford University Press, 2009.

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