Lougheed, L. (2007). IELTS =: International English Language Testing System. Tp. Hồ Chí Minh: Trẻ.
シカゴスタイル引用形Lougheed, Lin. IELTS =: International English Language Testing System. Tp. Hồ Chí Minh: Trẻ, 2007.
MLA引用形式Lougheed, Lin. IELTS =: International English Language Testing System. Tp. Hồ Chí Minh: Trẻ, 2007.
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