Ur, P. (2009). Grammar practice activities: A practical guide for teachers (Second edition.). Cambridge University Press.
Citación estilo ChicagoUr, Penny. Grammar Practice Activities: A Practical Guide for Teachers. Second edition. Cambridge: Cambridge University Press, 2009.
Cita MLAUr, Penny. Grammar Practice Activities: A Practical Guide for Teachers. Second edition. Cambridge University Press, 2009.
Warning: These citations may not always be 100% accurate.