University of Cambridge. (2012). Cambridge key English test 6 with answers: Official examination papers from University of Cambridge ESOL Examinations. Việt Nam: Fahasa Printing Factory.
Citação norma ChicagoUniversity of Cambridge. Cambridge Key English Test 6 With Answers: Official Examination Papers From University of Cambridge ESOL Examinations. Việt Nam: Fahasa Printing Factory, 2012.
Citação norma MLAUniversity of Cambridge. Cambridge Key English Test 6 With Answers: Official Examination Papers From University of Cambridge ESOL Examinations. Việt Nam: Fahasa Printing Factory, 2012.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.