Παραπομπή σε μορφή APA (7η εκδ.)

(2010). Cambridge first certificate in english 4 with answers: Official examination papers from University of Cambridge ESOL examinations. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cambridge First Certificate in English 4 with Answers: Official Examination Papers from University of Cambridge ESOL Examinations. Cambridge: Cambridge University Press, 2010.

Παραπομπή σε μορφή MLA (9th εκδ.)

Cambridge First Certificate in English 4 with Answers: Official Examination Papers from University of Cambridge ESOL Examinations. Cambridge University Press, 2010.