APA (7th ed.) Zitazioa
Kothari, C. R. (2007). Research methodology: Methods and techniques (2nd Ed.). New Age International.
Chicago Style (17th ed.) Zitazioa
Kothari, C. R. Research Methodology: Methods and Techniques. 2nd Ed. New Delhi: New Age International, 2007.
MLA (9th ed.) Zitazioa
Kothari, C. R. Research Methodology: Methods and Techniques. 2nd Ed. New Age International, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.