Lougheed, L. (2007). IELTS =: International English Language Testing System. Tp. Hồ Chí Minh: Trẻ.
Trích dẫn kiểu ChicagoLougheed, Lin. IELTS =: International English Language Testing System. Tp. Hồ Chí Minh: Trẻ, 2007.
MLA引文Lougheed, Lin. IELTS =: International English Language Testing System. Tp. Hồ Chí Minh: Trẻ, 2007.
警告:這些引文格式不一定是100%准確.