Ur, P. (1981). Discussions that work: Task-centred fluency practice. Univ. Pr.
Chicago Style (17. basım) AtıfUr, Penny. Discussions That Work: Task-centred Fluency Practice. Cambridge: Univ. Pr, 1981.
MLA (9th ed.) AtıfUr, Penny. Discussions That Work: Task-centred Fluency Practice. Univ. Pr, 1981.
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