Kothari, C. (2004). Research methodology: Methods [and] techniques (Rev. 2nd ed.). New Age International Publishers.
Lua i Stíl Chicago (17ú heag.)Kothari, C.R. Research Methodology: Methods [and] Techniques. Rev. 2nd ed. New Delhi: New Age International Publishers, 2004.
Lua MLA (9ú heag.)Kothari, C.R. Research Methodology: Methods [and] Techniques. Rev. 2nd ed. New Age International Publishers, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.