Cita APA

Ur, P., & Penny Ur. (1999). A course in language teaching: Trainee book. Cambridge, U.K. ; New York: Cambridge University Press.

Citación estilo Chicago

Ur, Penny, y Penny Ur. A Course in Language Teaching: Trainee Book. Cambridge, U.K. ; New York: Cambridge University Press, 1999.

Cita MLA

Ur, Penny, y Penny Ur. A Course in Language Teaching: Trainee Book. Cambridge, U.K. ; New York: Cambridge University Press, 1999.