Kothari, C. R. (2003). Research Methodology: Methods & Techniques. Wishwa Prakashan.
Chicago Style (17th ed.) ZitazioaKothari, C. R. Research Methodology: Methods & Techniques. New Delhi: Wishwa Prakashan, 2003.
MLA (9th ed.) ZitazioaKothari, C. R. Research Methodology: Methods & Techniques. Wishwa Prakashan, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.