Cita APA (7a ed.)

Ur, P. (1999). A course in language teaching: Trainee book. Cambridge University Press.

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

Ur, Penny. A Course in Language Teaching: Trainee Book. Cambridge University Press, 1999.