APA citiranje

Barrall, I. (2009). Intelligent business coursebook upper intermediate. Oxford University Press.

Trích dẫn kiểu Chicago

Barrall, Irene. Intelligent Business Coursebook Upper Intermediate. Oxford University Press, 2009.

MLA citiranje

Barrall, Irene. Intelligent Business Coursebook Upper Intermediate. Oxford University Press, 2009.

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