Ur, P. (2009). Grammar practice activities: A practical guide for teachers (Second edition.). Cambridge University Press.
Chicago Style (17. basım) AtıfUr, Penny. Grammar Practice Activities: A Practical Guide for Teachers. Second edition. Cambridge: Cambridge University Press, 2009.
MLA (9th ed.) AtıfUr, Penny. Grammar Practice Activities: A Practical Guide for Teachers. Second edition. Cambridge University Press, 2009.
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