Citazione Stile APA (7a Edizione)

Soars, J., & Soars, L. New headway English course. Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Soars, John, e Liz Soars. New Headway English Course. Oxford : c2000 [2001 printing]: Oxford University Press.

Citatione MLA (8a ed.)

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