APA-ийн эшлэл(7 дахь хэвлэлт)

Kothari, C. (2004). Research methodology: Methods [and] techniques (Rev. 2nd ed.). New Age International Publishers.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kothari, C.R. Research Methodology: Methods [and] Techniques. Rev. 2nd ed. New Delhi: New Age International Publishers, 2004.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kothari, C.R. Research Methodology: Methods [and] Techniques. Rev. 2nd ed. New Age International Publishers, 2004.