APA aipamena

C R Kothari. (1990). Research methodology: Methods and techniques. New Delhi.

Chicago Style aipamena

C R Kothari. Research Methodology: Methods and Techniques. New Delhi, 1990.

MLA aipamena

C R Kothari. Research Methodology: Methods and Techniques. New Delhi, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.