APA-ийн эшлэл(7 дахь хэвлэлт)

Kothari, C. R. (2020). Research Methodology: Methods and Techniques (4th.). New Age International Publishers.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kothari, C R. Research Methodology: Methods and Techniques. 4th. Banglore: New Age International Publishers, 2020.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kothari, C R. Research Methodology: Methods and Techniques. 4th. New Age International Publishers, 2020.