@book{1633,
	author = { Singh, G. B},
	title = {Research methodology : advanced techniques with statistical methods},
	publisher = {Paradise Publishers,},
	year = {2011.},
	address = {Jaipur :},
	url = {https://www.worldcat.org/title/research-methodology-advanced-techniques-with-statistical-methods/oclc/754988940}
}