@book{50496,
	author = {Ray, G. L and  Mondal, Sagar},
	title = {Research Methods in Social Sciences and Extension Education / by G. L. Ray and Sagar Mondal},
	publisher = {Kalyani Publishers; },
	year = {2025},
	address = {Ludhiana : },
	edition = {3rd rev. and enlarged ed. reprint}
}