APA (7th ed.) Citation
Ur, P. (1988). Grammar practice activities: A practical guide for teachers. CUP.
Chicago Style (17th ed.) Citation
Ur, Penny. Grammar Practice Activities: A Practical Guide for Teachers. Cambridge: CUP, 1988.
MLA (9th ed.) Citation
Ur, Penny. Grammar Practice Activities: A Practical Guide for Teachers. CUP, 1988.
Warning: These citations may not always be 100% accurate.