APA Citation

Duckworth, M. (1996). Open doors: Workbook 3. Oxford: Oxford University Press.

Trích dẫn kiểu Chicago

Duckworth, Michael. Open Doors: Workbook 3. Oxford: Oxford University Press, 1996.

MLA Citation

Duckworth, Michael. Open Doors: Workbook 3. Oxford: Oxford University Press, 1996.

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