University of Cambridge. (2014). Cambridge preliminary English test 6 audio CD set: Authentic examination papers from Cambridge ESOL. Việt Nam: Fahasa Printing Factory.
Styl ChicagoUniversity of Cambridge. Cambridge Preliminary English Test 6 Audio CD Set: Authentic Examination Papers From Cambridge ESOL. Việt Nam: Fahasa Printing Factory, 2014.
Citace podle MLAUniversity of Cambridge. Cambridge Preliminary English Test 6 Audio CD Set: Authentic Examination Papers From Cambridge ESOL. Việt Nam: Fahasa Printing Factory, 2014.
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