Roberts, R. (2004). IELTS foundation: Study skills. Oxford: McMillan.
シカゴスタイル引用形Roberts, Racheal. IELTS Foundation: Study Skills. Oxford: McMillan, 2004.
MLA引用形式Roberts, Racheal. IELTS Foundation: Study Skills. Oxford: McMillan, 2004.
警告: この引用は必ずしも正確ではありません.