Gaya APA
Ur, Penny. (2009).
Grammar practice activities : a practical guide for teachers (2nd).
New York:
Cambridge University Press.
Gaya Chicago
Ur, Penny.
Grammar practice activities : a practical guide for teachers.
2nd
New York:
Cambridge University Press,
2009.
Text.
Gaya MLA
Ur, Penny.
Grammar practice activities : a practical guide for teachers.
2nd
New York:
Cambridge University Press,
2009.
Text.
Gaya Turabian
Ur, Penny.
Grammar practice activities : a practical guide for teachers.
2nd
New York:
Cambridge University Press,
2009.
Print.