Soars, J., & Soars, L. (1996). New headway English course: Intermediate Student's book. Oxford University Press.

Soars, John, and Liz Soars. New Headway English Course: Intermediate Student's Book. New York: Oxford University Press, 1996.

Soars, John, and Liz Soars. New Headway English Course: Intermediate Student's Book. Oxford University Press, 1996.