APA (7th ed.) Citation

(2006). Cambridge Exams Extra PET with answers. Cambridge, Cambridge University Press, 2006.

Chicago Style (17th ed.) Citation

Cambridge Exams Extra PET with Answers. Cambridge, Cambridge University Press, 2006, 2006.

MLA (9th ed.) Citation

Cambridge Exams Extra PET with Answers. Cambridge, Cambridge University Press, 2006, 2006.

Warning: These citations may not always be 100% accurate.