Kothari, C. (2004). Research Methodology. New Age International.
Lua i Stíl Chicago (17ú heag.)Kothari, C.R. Research Methodology. NEw Delhi: New Age International, 2004.
Lua MLA (9ú heag.)Kothari, C.R. Research Methodology. New Age International, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.