Ahuja, R. (2002). Research Methods. Rawat.
Chicago Style (17th ed.) ZitazioaAhuja, Ram. Research Methods. New Delhi: Rawat, 2002.
MLA (9th ed.) ZitazioaAhuja, Ram. Research Methods. Rawat, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.