University of Cambridge. (2011). Cambridge key English test 5 with answers: Examination papers from University of Cambridge ESOL examinations. Việt Nam: Fahasa Printing Factory.
Chicago-tyylinen lähdeviittausUniversity of Cambridge. Cambridge Key English Test 5 With Answers: Examination Papers From University of Cambridge ESOL Examinations. Việt Nam: Fahasa Printing Factory, 2011.
MLA-viiteUniversity of Cambridge. Cambridge Key English Test 5 With Answers: Examination Papers From University of Cambridge ESOL Examinations. Việt Nam: Fahasa Printing Factory, 2011.
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