Văn Hào. (2010). Cambridge IELTS 6: Examination papers from the University of Cambridge ESOL Examinations: English for Speaker of Other Languages. Hà Nội: Từ điển Bách khoa.
Dyfyniad Arddull ChicagoVăn Hào. Cambridge IELTS 6: Examination Papers From the University of Cambridge ESOL Examinations: English for Speaker of Other Languages. Hà Nội: Từ điển Bách khoa, 2010.
Dyfyniad MLAVăn Hào. Cambridge IELTS 6: Examination Papers From the University of Cambridge ESOL Examinations: English for Speaker of Other Languages. Hà Nội: Từ điển Bách khoa, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.