Kumar, R. (2014). Research methodology (4th.). Sage Publication, New Delhi.
Cita Chicago (17th ed.)Kumar, Ranjit. Research Methodology. 4th. Sage Publication, New Delhi, 2014.
Cita MLA (9th ed.)Kumar, Ranjit. Research Methodology. 4th. Sage Publication, New Delhi, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.