Παραπομπή APA

Ranjit Kumar. (1999). Research methodology: A step by step guide for beginners (1st.). Sage.

Παραπομπή Chicago Style

Ranjit Kumar. Research Methodology: A Step by Step Guide for Beginners. 1st. London: Sage, 1999.

Παραπομπή MLA

Ranjit Kumar. Research Methodology: A Step by Step Guide for Beginners. 1st. Sage, 1999.