Cita APA

Duckworth, M. (1992). First Class: English for Tourism : Workbook. New York: Oxford University Press.

Citación estilo Chicago

Duckworth, Michael. First Class: English for Tourism : Workbook. New York: Oxford University Press, 1992.

Cita MLA

Duckworth, Michael. First Class: English for Tourism : Workbook. New York: Oxford University Press, 1992.