APA (7th ed.) Zitazioa

Soars, L. &. J. (2019). Headway: Beginner teacher's guide/ (Fifth edition.). Oxford University Press.

Chicago Style (17th ed.) Zitazioa

Soars, Liz & John. Headway: Beginner Teacher's Guide/. Fifth edition. UK: Oxford University Press, 2019.

MLA (9th ed.) Zitazioa

Soars, Liz & John. Headway: Beginner Teacher's Guide/. Fifth edition. Oxford University Press, 2019.