APA-ийн эшлэл(7 дахь хэвлэлт)

Kumar, R. (2014). Research Methodology: A step by step guide for beginners (4th ed.). Sage.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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