RICHARDS, J., & LONG, M. (1981). Breakthrough 2: A course in english communication prac-tice. Oxford University Press.
芝加哥风格引文RICHARDS, J.C, 与 M.N LONG. Breakthrough 2: A Course in English Communication Prac-tice. Kuala Lumpur: Oxford University Press, 1981.
MLA引文RICHARDS, J.C, 与 M.N LONG. Breakthrough 2: A Course in English Communication Prac-tice. Oxford University Press, 1981.
警告：这些引文格式不一定是100％准确.