Ur, P. (1981). Discussions that work: Task-centred fluency practice. Cambridge University Press.
Čikaški stil citiranja (17. izdanje)Ur, Penny. Discussions That Work: Task-centred Fluency Practice. Cambridge ; New York: Cambridge University Press, 1981.
MLA način citiranja (8. izdanje)Ur, Penny. Discussions That Work: Task-centred Fluency Practice. Cambridge University Press, 1981.
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