APA citiranje

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

Trích dẫn kiểu Chicago

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

MLA citiranje

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