Sinha, S. C., & Dhiman, A. K. (2002). Research methodology(2 vols). Ess Ess Publications.
Chicago Style aipamenaSinha, Suresh C., and Anil K. Dhiman. Research Methodology(2 Vols). New Delhi: Ess Ess Publications, 2002.
MLA aipamenaSinha, Suresh C., and Anil K. Dhiman. Research Methodology(2 Vols). Ess Ess Publications, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.