Cita APA

Wallwork, A. (2007). International express: Workbook : Upper-Intermediate. New York: Oxford University Press.

Citación estilo Chicago

Wallwork, Adrian. International Express: Workbook : Upper-Intermediate. New York: Oxford University Press, 2007.

Cita MLA

Wallwork, Adrian. International Express: Workbook : Upper-Intermediate. New York: Oxford University Press, 2007.