APA citiranje

Soars, J., & Soars, L. (1987). Headway - Upper-intermediate: Teacher's book. Oxford: Oxford University Press.

Trích dẫn kiểu Chicago

Soars, John, và Liz Soars. Headway - Upper-intermediate: Teacher's Book. Oxford: Oxford University Press, 1987.

MLA citiranje

Soars, John, và Liz Soars. Headway - Upper-intermediate: Teacher's Book. Oxford: Oxford University Press, 1987.