APA Citatie

Soars, L., & Soars, J. (2005). New headway: Upper - intermediate : student's book (3rd ed.). Oxford: Oxford University Press.

Chicago Style citaat

Soars, Liz., en John Soars. New Headway: Upper - Intermediate : Student's Book. 3rd ed. Oxford: Oxford University Press, 2005.

MLA citatie

Soars, Liz., en John Soars. New Headway: Upper - Intermediate : Student's Book. 3rd ed. Oxford: Oxford University Press, 2005.