Richards, J., & Long, M. (1988). Breakthrough: A Course in English Communication Practice. London: Oxford University Press.
Trích dẫn kiểu ChicagoRichards, J.C., và M.n Long. Breakthrough: A Course in English Communication Practice. London: Oxford University Press, 1988.
MLA引文Richards, J.C., và M.n Long. Breakthrough: A Course in English Communication Practice. London: Oxford University Press, 1988.
警告:这些引文格式不一定是100%准确.