University of Cambridge. (2006). Cambridge IELTS 5 Audio CD: Official examination papers from University of Cambridge ESOL examinations. New York: Cambridge university Press.
Παραπομπή Chicago StyleUniversity of Cambridge. Cambridge IELTS 5 Audio CD: Official Examination Papers From University of Cambridge ESOL Examinations. New York: Cambridge university Press, 2006.
Παραπομπή MLAUniversity of Cambridge. Cambridge IELTS 5 Audio CD: Official Examination Papers From University of Cambridge ESOL Examinations. New York: Cambridge university Press, 2006.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.