APA (7th ed.) Citation

Hashemi L. Louise & Thomas B. Barbara. (2011). Cambridge Grammar for PET: Grammar reference and practice (7th ed.). Cambridge, Cambridge University Press, 2011.

Chicago Style (17th ed.) Citation

Hashemi L. Louise and Thomas B. Barbara. Cambridge Grammar for PET: Grammar Reference and Practice. 7th ed. Cambridge, Cambridge University Press, 2011, 2011.

MLA (9th ed.) Citation

Hashemi L. Louise and Thomas B. Barbara. Cambridge Grammar for PET: Grammar Reference and Practice. 7th ed. Cambridge, Cambridge University Press, 2011, 2011.