APA (7th ed.) Zitazioa
Kumar, R. (2005). Research methodology: A step by-by-step guide for beginners (2nd ed.). Sage Publications.
Chicago Style (17th ed.) Zitazioa
Kumar, Ranjit. Research Methodology: A Step By-by-step Guide for Beginners. 2nd ed. London: Sage Publications, 2005.
MLA (9th ed.) Zitazioa
Kumar, Ranjit. Research Methodology: A Step By-by-step Guide for Beginners. 2nd ed. Sage Publications, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.