Παραπομπή σε μορφή APA (7η εκδ.)

(2001). Cambridge Certificate in Advanced English 4: With answers : examination papers from the University of Cambridge ESOL examinations : English for speakers of other language. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cambridge Certificate in Advanced English 4: With Answers : Examination Papers from the University of Cambridge ESOL Examinations : English for Speakers of Other Language. Cambridge: Cambridge University Press, 2001.

Παραπομπή σε μορφή MLA (9th εκδ.)

Cambridge Certificate in Advanced English 4: With Answers : Examination Papers from the University of Cambridge ESOL Examinations : English for Speakers of Other Language. Cambridge University Press, 2001.