Cita APA

Soars John. (1995). Headway: Workbook : upper-Intermediate. New York: Oxford University Press.

Citación estilo Chicago

Soars John. Headway: Workbook : Upper-Intermediate. New York: Oxford University Press, 1995.

Cita MLA

Soars John. Headway: Workbook : Upper-Intermediate. New York: Oxford University Press, 1995.