Cita APA (7th ed.)
Ur, P. A Course in Language Teaching: Practice and Theory. Cambridge University.
Cita Chicago (17th ed.)
Ur, Penny. A Course in Language Teaching: Practice and Theory. Cambridge, Inglaterra: Cambridge University.
Cita MLA (9th ed.)
Ur, Penny. A Course in Language Teaching: Practice and Theory. Cambridge University.
Atenció: Aquestes cites poden no estar 100% correctes.