APA (7th ed.) Zitazioa

Kothari C.R. (2015). Research methodology: Methods and techniques. New age International.

Chicago Style (17th ed.) Zitazioa

Kothari C.R. Research Methodology: Methods and Techniques. New Delhi: New age International, 2015.

MLA (9th ed.) Zitazioa

Kothari C.R. Research Methodology: Methods and Techniques. New age International, 2015.