Harding, K., & Wallwork, A. (2008). International express: Student's book upper-intermediate. New York, Estados Unidos de América: Oxford University Press.
Chicago Style CitationHarding, Keith, and Adrian Wallwork. International Express: Student's Book Upper-intermediate. New York, Estados Unidos de América: Oxford University Press, 2008.
MLA CitationHarding, Keith, and Adrian Wallwork. International Express: Student's Book Upper-intermediate. New York, Estados Unidos de América: Oxford University Press, 2008.
Warning: These citations may not always be 100% accurate.