Citazione APA

Soars, L., & Soars, J. (1998). New headway english course: Upper - intermediate student's book. New York: Oxford University Press.

Stile di citazione Chicago

Soars, Liz, e John Soars. New Headway English Course: Upper - Intermediate Student's Book. New York: Oxford University Press, 1998.

Citazione MLA

Soars, Liz, e John Soars. New Headway English Course: Upper - Intermediate Student's Book. New York: Oxford University Press, 1998.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.