Soars, L., & Soars, J. (2004). New headway: English course :elementary student's book (Intermediate Workbook :with key.). Oxford University Press.

Soars, Liz, and John Soars. New Headway: English Course :elementary Student's Book. Intermediate Workbook :with key. Oxford: Oxford University Press, 2004.

Soars, Liz, and John Soars. New Headway: English Course :elementary Student's Book. Intermediate Workbook :with key. Oxford University Press, 2004.