Citazione Stile APA (7a Edizione)

Soars, L., & Soars, J. (2011). New headway elementary student's book (4th ed.). Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Soars, Liz, e John Soars. New Headway Elementary Student's Book. 4th ed. Oxford: Oxford University Press, 2011.

Citatione MLA (9a ed.)

Soars, Liz, e John Soars. New Headway Elementary Student's Book. 4th ed. Oxford University Press, 2011.