Soars, J., & Soars, L. (1986). Headway: Workbook, Upper-Intermediate. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoSoars, John., và Liz Soars. Headway: Workbook, Upper-Intermediate. Oxford: Oxford University Press, 1986.
MLA引文Soars, John., và Liz Soars. Headway: Workbook, Upper-Intermediate. Oxford: Oxford University Press, 1986.
警告：這些引文格式不一定是100％准確.