Griffiths, M. (2012). Cambridge IELTS: Practice tests. TP. HCM: Tổng hợp.
Trích dẫn kiểu ChicagoGriffiths, Mark. Cambridge IELTS: Practice Tests. TP. HCM: Tổng hợp, 2012.
MLA引文Griffiths, Mark. Cambridge IELTS: Practice Tests. TP. HCM: Tổng hợp, 2012.
警告:這些引文格式不一定是100%准確.