Kothari, C. R. (1985). Research methodology: Methods and techniques. Wiley Eastern.
Chicago Style aipamenaKothari, C. R. Research Methodology: Methods and Techniques. New Delhi: Wiley Eastern, 1985.
MLA aipamenaKothari, C. R. Research Methodology: Methods and Techniques. Wiley Eastern, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.