Singh, M. L. (2003). Understanding research methodology: What?, When?, How? (Third.). J.M.Singh.
Chicago Style aipamenaSingh, Mrigendra Lal. Understanding Research Methodology: What?, When?, How? Third. Kathmandu: J.M.Singh, 2003.
MLA aipamenaSingh, Mrigendra Lal. Understanding Research Methodology: What?, When?, How? Third. J.M.Singh, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.