APA (7th ed.) Zitazioa

Singh, Y. K. (2005). Research methodology (ed.). A. P. H..

Chicago Style (17th ed.) Zitazioa

Singh, Y. Kumar. Research Methodology. ed. New Delhi: A. P. H., 2005.

MLA (9th ed.) Zitazioa

Singh, Y. Kumar. Research Methodology. ed. A. P. H., 2005.