University of Cambridge. (2014). Cambridge preliminary English test 7 audio CD set: Authentic examination papers from Cambridge ESOL. Việt Nam: Fahasa Printing Factory.
Citación estilo ChicagoUniversity of Cambridge. Cambridge Preliminary English Test 7 Audio CD Set: Authentic Examination Papers From Cambridge ESOL. Việt Nam: Fahasa Printing Factory, 2014.
Cita MLAUniversity of Cambridge. Cambridge Preliminary English Test 7 Audio CD Set: Authentic Examination Papers From Cambridge ESOL. Việt Nam: Fahasa Printing Factory, 2014.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.