C R Kothari. (1985). Research Methodology: Methods & Techniques (II.). Wishwa Prakashan.
Chicago Style aipamenaC R Kothari. Research Methodology: Methods & Techniques. II. New Delhi: Wishwa Prakashan, 1985.
MLA aipamenaC R Kothari. Research Methodology: Methods & Techniques. II. Wishwa Prakashan, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.