Văn Hào. (2010). Cambridge IELTS 7: Examination papers from the University of Cambridge ESOL Examinations: English for Speaker of Other Languages. Hà Nội: Từ điển Bách khoa.
Chicago ZitierstilVăn Hào. Cambridge IELTS 7: Examination Papers From the University of Cambridge ESOL Examinations: English for Speaker of Other Languages. Hà Nội: Từ điển Bách khoa, 2010.
MLA ZitierstilVăn Hào. Cambridge IELTS 7: Examination Papers From the University of Cambridge ESOL Examinations: English for Speaker of Other Languages. Hà Nội: Từ điển Bách khoa, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.