Cita APA

Soars, J., & Soars, L. (2003). American Headway: Workbook 3. New York: Oxford University Press.

Citación estilo Chicago

Soars, John, y Liz Soars. American Headway: Workbook 3. New York: Oxford University Press, 2003.

Cita MLA

Soars, John, y Liz Soars. American Headway: Workbook 3. New York: Oxford University Press, 2003.