Kumar, R. (2014). Research Methodology A Step -by- Step Guide for Beginners (4th.). Sage.
芝加哥风格引文Kumar, Ranjit. Research Methodology A Step -by- Step Guide for Beginners. 4th. Sage, 2014.
MLA引文Kumar, Ranjit. Research Methodology A Step -by- Step Guide for Beginners. 4th. Sage, 2014.
警告：这些引文格式不一定是100％准确.