Cita APA

Soars, J., & Soars, L. (1991). Headway: Pre-Intermediate : Student's Book. Oxford: Oxford University Press.

Chicago Style Citation

Soars, John, i Liz Soars. Headway: Pre-Intermediate : Student's Book. Oxford: Oxford University Press, 1991.

Cita MLA

Soars, John, i Liz Soars. Headway: Pre-Intermediate : Student's Book. Oxford: Oxford University Press, 1991.