APA (7 वां संस्करण) प्रशस्ति पत्र

Kumar, R. (2014). Research Methodology A Step -by- Step Guide for Beginners (4th.). Sage.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Kumar, Ranjit. Research Methodology A Step -by- Step Guide for Beginners. 4th. New delhi: Sage, 2014.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Kumar, Ranjit. Research Methodology A Step -by- Step Guide for Beginners. 4th. Sage, 2014.