Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (8a ed.)

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