University of Cambridge. (2011). Cambridge preliminary English test 6 with answers: Examination papers from University of Cambridge ESOL examinations. Việt Nam: Fahasa Printing Factory.
Chicago-стиль цитированияUniversity of Cambridge. Cambridge Preliminary English Test 6 With Answers: Examination Papers From University of Cambridge ESOL Examinations. Việt Nam: Fahasa Printing Factory, 2011.
MLA-цитированиеUniversity of Cambridge. Cambridge Preliminary English Test 6 With Answers: Examination Papers From University of Cambridge ESOL Examinations. Việt Nam: Fahasa Printing Factory, 2011.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.