Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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