APA-ийн эшлэл(7 дахь хэвлэлт)

Kumar,Ranjit. (2014). Research methodology: A step-by-step guide for beginners (4th.). Sage.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kumar,Ranjit. Research Methodology: A Step-by-step Guide for Beginners. 4th. New Delhi: Sage, 2014.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kumar,Ranjit. Research Methodology: A Step-by-step Guide for Beginners. 4th. Sage, 2014.