Soars, J., & Soars, L. (1987). Headway - Upper-intermediate: Teacher's book. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoSoars, John, và Liz Soars. Headway - Upper-intermediate: Teacher's Book. Oxford: Oxford University Press, 1987.
MLA引文Soars, John, và Liz Soars. Headway - Upper-intermediate: Teacher's Book. Oxford: Oxford University Press, 1987.
警告：這些引文格式不一定是100％准確.