Naunton, J., & Clark, P. (2000). Clockwise: Upper - intermediate : Teacher's book. New York: Oxford University Press.
Trích dẫn kiểu ChicagoNaunton, Jon., và Paul Clark. Clockwise: Upper - Intermediate : Teacher's Book. New York: Oxford University Press, 2000.
MLA CitationNaunton, Jon., và Paul Clark. Clockwise: Upper - Intermediate : Teacher's Book. New York: Oxford University Press, 2000.
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