Kumar, R. (2005). Research Methodology: A Step-by-Step Guide for Beginners (2nd ed.). Pearson.
Chicago-viite (17. p.)Kumar, Ranjit. Research Methodology: A Step-by-Step Guide for Beginners. 2nd ed. Australia: Pearson, 2005.
MLA-viite (9. p.)Kumar, Ranjit. Research Methodology: A Step-by-Step Guide for Beginners. 2nd ed. Pearson, 2005.
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