Kumar, R. (2005). Research methodology: A step by step guide for beginners. Pearson.
Tohutoru Kātū Chicago (17th ed.)Kumar, Ranjit. Research Methodology: A Step by Step Guide for Beginners. New Delhi: Pearson, 2005.
Tohutoro MLA (9th ed.)Kumar, Ranjit. Research Methodology: A Step by Step Guide for Beginners. Pearson, 2005.
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