APA (7th ed.) Citation

Soars, L., & Soars, J. (2003). New Headway English course: Pre-intermediate : student's book.

Chicago Style (17th ed.) Citation

Soars, Liz, and John Soars. New Headway English Course: Pre-intermediate : Student's Book. Oxford, 2003.

MLA (9th ed.) Citation

Soars, Liz, and John Soars. New Headway English Course: Pre-intermediate : Student's Book. 2003.