Lougheed, L. (2007). Barron's IELTS: International English language testing system. Tp.HCM: Trẻ.
シカゴスタイル引用形Lougheed, Lin. Barron's IELTS: International English Language Testing System. Tp.HCM: Trẻ, 2007.
MLA引用形式Lougheed, Lin. Barron's IELTS: International English Language Testing System. Tp.HCM: Trẻ, 2007.
警告: この引用は必ずしも正確ではありません.