Kumar, R. (2011). Research Methodology (3rd ed.). Sage.
芝加哥风格引文Kumar, Ranjit. Research Methodology. 3rd ed. New Delhi: Sage, 2011.
MLA引文Kumar, Ranjit. Research Methodology. 3rd ed. Sage, 2011.
警告：这些引文格式不一定是100％准确.
APA引文
Kumar, R. (2011). Research Methodology (3rd ed.). Sage.
芝加哥风格引文Kumar, Ranjit. Research Methodology. 3rd ed. New Delhi: Sage, 2011.
MLA引文Kumar, Ranjit. Research Methodology. 3rd ed. Sage, 2011.