APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Ur, Penny. Discussions That Work: Task-centred Fluency Practice. Univ. Pr, 1981.