APA Citation

Boyd, E. (2009). Premium: C1 level (Coursebook). Harlow (England): Pearson education limited.

Trích dẫn kiểu Chicago

Boyd, Elaine. Premium: C1 Level (Coursebook). Harlow (England): Pearson education limited, 2009.

MLA Citation

Boyd, Elaine. Premium: C1 Level (Coursebook). Harlow (England): Pearson education limited, 2009.

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