Ur, P. (1991). A course in language teaching: Practice and theory. Cambridge University Press.
Chicago Style aipamenaUr, Penny. A Course in Language Teaching: Practice and Theory. Cambridge [England] ; New York: Cambridge University Press, 1991.
MLA aipamenaUr, Penny. A Course in Language Teaching: Practice and Theory. Cambridge University Press, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.