APA-ийн эшлэл(7 дахь хэвлэлт)

Kothari, C. R. (2019). Research methodology: Methods and techniques (4th.). New Age International Publication.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kothari, C. R. Research Methodology: Methods and Techniques. 4th. Bangalore: New Age International Publication, 2019.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kothari, C. R. Research Methodology: Methods and Techniques. 4th. New Age International Publication, 2019.