APA-ийн эшлэл(7 дахь хэвлэлт)

Kumar, R. (2008). Research Methodology: A step-by-step guide for beginners (2nd ed.). Pearson Education.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kumar, Ranjit. Research Methodology: A Step-by-step Guide for Beginners. 2nd ed. New Delhi: Pearson Education, 2008.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kumar, Ranjit. Research Methodology: A Step-by-step Guide for Beginners. 2nd ed. Pearson Education, 2008.