APA (7th ed.) Citation
Soars, L., & Soars, J. (1999). New Headway English Course. Upper-intermediate. Student`s book (1. publish.-dotlač.). Oxford University Press.
Chicago Style (17th ed.) Citation
Soars, Liz, and John Soars. New Headway English Course. Upper-intermediate. Student`s Book. 1. publish.-dotlač. Oxford: Oxford University Press, 1999.
MLA (9th ed.) Citation
Soars, Liz, and John Soars. New Headway English Course. Upper-intermediate. Student`s Book. 1. publish.-dotlač. Oxford University Press, 1999.
Warning: These citations may not always be 100% accurate.