Ur, P. (1999). A course in language teaching: Trainee book. Cambridge University Press.
芝加哥风格引文Ur, Penny. A Course in Language Teaching: Trainee Book. Cambridge, U.K. ; New York: Cambridge University Press, 1999.
MLA引文Ur, Penny. A Course in Language Teaching: Trainee Book. Cambridge University Press, 1999.
警告：这些引文格式不一定是100％准确.