Ur, P. (1991). A course in language teaching: Practice and theory. Cambridge University Press.
芝加哥风格引文Ur, Penny. A Course in Language Teaching: Practice and Theory. Cambridge [England] ; New York: Cambridge University Press, 1991.
MLA引文Ur, Penny. A Course in Language Teaching: Practice and Theory. Cambridge University Press, 1991.
警告：这些引文格式不一定是100％准确.