Ur, P. (1996). Grammar practice activities: A practical guide for teachers. Cambridge University Press.
Čikaški stil citiranja (17. izdanje)Ur, Penny. Grammar Practice Activities: A Practical Guide for Teachers. Cambridge ; New York: Cambridge University Press, 1996.
MLA način citiranja (8. izdanje)Ur, Penny. Grammar Practice Activities: A Practical Guide for Teachers. Cambridge University Press, 1996.
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