APA aipamena

Trappe, T., & Tullis, G. (2017). Intelligent business coursebook: Upper intermediate. China: Pearson.

Chicago Style aipamena

Trappe, Tonya, và Graham Tullis. Intelligent Business Coursebook: Upper Intermediate. China: Pearson, 2017.

MLA aipamena

Trappe, Tonya, và Graham Tullis. Intelligent Business Coursebook: Upper Intermediate. China: Pearson, 2017.

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