Kumar, R. (2005). Research methodology: A step by step guide for beginners. Pearson.
Citazione stile Chigago Style (17a edizione)Kumar, Ranjit. Research Methodology: A Step by Step Guide for Beginners. New Delhi: Pearson, 2005.
Citatione MLA (9a ed.)Kumar, Ranjit. Research Methodology: A Step by Step Guide for Beginners. Pearson, 2005.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.