University of Cambridge. (2011). Cambridge IELTS 8 Audio CD: Official examination papers from University of Cambridge ESOL examinations. New York: Cambridge university Press.
Stile di citazione ChicagoUniversity of Cambridge. Cambridge IELTS 8 Audio CD: Official Examination Papers From University of Cambridge ESOL Examinations. New York: Cambridge university Press, 2011.
Citazione MLAUniversity of Cambridge. Cambridge IELTS 8 Audio CD: Official Examination Papers From University of Cambridge ESOL Examinations. New York: Cambridge university Press, 2011.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.