Cita APA (7th ed.)

Soars, L., & Soars, J. (1998). New headway english course. Oxford University Press.

Cita Chicago (17th ed.)

Soars, Liz, i John Soars. New Headway English Course. New York: Oxford University Press, 1998.

Cita MLA (8th ed.)

Soars, Liz, i John Soars. New Headway English Course. Oxford University Press, 1998.