Soars, L., Soars, J., Hancock, P., & Storton, R. (2019). Headway: Advanced Teacher's Guide (quinta edición.). Oxford University Press.
芝加哥风格引文Soars, Liz, John Soars, Paul Hancock, 与 Richard Storton. Headway: Advanced Teacher's Guide. quinta edición. Oxford: Oxford University Press, 2019.
MLA引文Soars, Liz, et al. Headway: Advanced Teacher's Guide. quinta edición. Oxford University Press, 2019.
警告：这些引文格式不一定是100％准确.