University of Cambridge. (2014). Cambridge key English test 4 audio CD: Examination papers from University of Cambridge ESOL examinations. Việt Nam: Fahasa Printing Factory.
Citação norma ChicagoUniversity of Cambridge. Cambridge Key English Test 4 Audio CD: Examination Papers From University of Cambridge ESOL Examinations. Việt Nam: Fahasa Printing Factory, 2014.
Citação norma MLAUniversity of Cambridge. Cambridge Key English Test 4 Audio CD: Examination Papers From University of Cambridge ESOL Examinations. Việt Nam: Fahasa Printing Factory, 2014.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.