Kothari, C. (2004). Research Methodology (2.). New Age.
Cita Chicago (17th ed.)Kothari, C.R. Research Methodology. 2. New Delhi: New Age, 2004.
Cita MLA (9th ed.)Kothari, C.R. Research Methodology. 2. New Age, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.