Slater,Stephen. (2008). Ielts on track test practice Academic. HCM: Tổng hợp.
Trích dẫn kiểu ChicagoSlater,Stephen. Ielts On Track Test Practice Academic. HCM: Tổng hợp, 2008.
MLA引文Slater,Stephen. Ielts On Track Test Practice Academic. HCM: Tổng hợp, 2008.
警告:这些引文格式不一定是100%准确.