Soars, J., & Soars, L. (1989). Headway: Advanced : Student's Book. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoSoars, John, và Liz Soars. Headway: Advanced : Student's Book. Oxford: Oxford University Press, 1989.
MLA引文Soars, John, và Liz Soars. Headway: Advanced : Student's Book. Oxford: Oxford University Press, 1989.
警告：這些引文格式不一定是100％准確.