Hashemi L. Louise & Thomas B. Barbara. (2010). Cambridge Grammar for PET with answers: Self-study grammar reference and practice (5th ed.). Cambridge, Cambridge University Press, 2010.
Chicago-Zitierstil (17. Ausg.)Hashemi L. Louise und Thomas B. Barbara. Cambridge Grammar for PET with Answers: Self-study Grammar Reference and Practice. 5th ed. Cambridge, Cambridge University Press, 2010, 2010.
MLA-Zitierstil (9. Ausg.)Hashemi L. Louise und Thomas B. Barbara. Cambridge Grammar for PET with Answers: Self-study Grammar Reference and Practice. 5th ed. Cambridge, Cambridge University Press, 2010, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.