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