Style de citation APA (7e éd.)

Ur, P. (1981). Discussions that work: Task-centred fluency practice. Cambridge University.

Style de citation Chicago (17e éd.)

Ur, Penny. Discussions That Work: Task-centred Fluency Practice. Cambridge: Cambridge University, 1981.

Style de citation MLA (9e éd.)

Ur, Penny. Discussions That Work: Task-centred Fluency Practice. Cambridge University, 1981.