Research Methodology Methods and Techniques Second Revised Edition. Kothari, C. R. New Age International Publishers, 2nd revised edition edition edition, 2009.
bibtex   
@book{kothari_research_2009,
	edition = {2nd revised edition edition},
	title = {Research {Methodology} {Methods} and {Techniques} {Second} {Revised} {Edition}},
	publisher = {New Age International Publishers},
	author = {Kothari, C. R.},
	year = {2009},
	keywords = {methodology, obsolete}
}

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