@book{119830,
	author = {Madge, John Hylton},
	title = {Las herramientas de la ciencia social},
	publisher = {Editorial Paidós},
	year = {1969},
	series = {Biblioteca de psicología social y sociología, v. 29},
	address = {Buenos Aires},
	note = {Translation of : The tools of social science}
}