Kumar,Ranjit. (2019). Research Methodology A Step-by-Step Guide for Beginners (5th.). Sage.
Chicago-viite (17. p.)Kumar,Ranjit. Research Methodology A Step-by-Step Guide for Beginners. 5th. London: Sage, 2019.
MLA-viite (9. p.)Kumar,Ranjit. Research Methodology A Step-by-Step Guide for Beginners. 5th. Sage, 2019.
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