APA-ийн эшлэл(7 дахь хэвлэлт)

Kumar,Ranjit. (2019). Research Methodology A Step-by-Step Guide for Beginners (5th.). Sage.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kumar,Ranjit. Research Methodology A Step-by-Step Guide for Beginners. 5th. London: Sage, 2019.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kumar,Ranjit. Research Methodology A Step-by-Step Guide for Beginners. 5th. Sage, 2019.