APA引文

 Kumar, R. (2011).  Research methodology: A step-by-step guide for beginners.  Sage.

Trích dẫn kiểu Chicago

 Kumar, Ranjit.  Research Methodology: A Step-by-step Guide for Beginners.  Sage, 2011.

MLA引文

 Kumar, Ranjit.  Research Methodology: A Step-by-step Guide for Beginners.  Sage, 2011.

警告：這些引文格式不一定是100％准確.