APA citiranje

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

Trích dẫn kiểu Chicago

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

MLA citiranje

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