Cambridge University Press. (2011). Cambridge Key English Test 4: Examination Papers from University of Cambridge ESOL Examinations english for sprakers of other languages. Vietnam: Fahasa.
Citação norma ChicagoCambridge University Press. Cambridge Key English Test 4: Examination Papers From University of Cambridge ESOL Examinations English for Sprakers of Other Languages. Vietnam: Fahasa, 2011.
Citação norma MLACambridge University Press. Cambridge Key English Test 4: Examination Papers From University of Cambridge ESOL Examinations English for Sprakers of Other Languages. Vietnam: Fahasa, 2011.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.