Verma R. K. & Verma, G. (1989). Research methodology. Common Wealth Publishers.
シカゴスタイル引用形Verma R. K. , Gopal Verma. Research Methodology. New Delhi: Common Wealth Publishers, 1989.
MLA引用形式Verma R. K. , Gopal Verma. Research Methodology. Common Wealth Publishers, 1989.
警告: この引用は必ずしも正確ではありません.