Ur, P. (1992). Discussions that work task centred fluency practice. New York: Cambridge university press.
Čikaški stil citiranjaUr, Penny. Discussions That Work Task Centred Fluency Practice. New York: Cambridge university press, 1992.
MLA način citiranjaUr, Penny. Discussions That Work Task Centred Fluency Practice. New York: Cambridge university press, 1992.
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