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