Kumar, R. (2014). Research Methodology: A step by step guide for beginners (4th ed.). Sage.
Cita Chicago (17th ed.)Kumar, Ranjit. Research Methodology: A Step by Step Guide for Beginners. 4th ed. New Delhi: Sage, 2014.
Cita MLA (9th ed.)Kumar, Ranjit. Research Methodology: A Step by Step Guide for Beginners. 4th ed. Sage, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.