Kumar, R. (2011). Research methodology: A step-by-step guide for beginners. Sage.
シカゴスタイル引用形Kumar, Ranjit. Research Methodology: A Step-by-step Guide for Beginners. Sage, 2011.
MLA引用形式Kumar, Ranjit. Research Methodology: A Step-by-step Guide for Beginners. Sage, 2011.
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