@book{48938,
	author = {Sjoberg, Gideon. and Nett, Roger},
	title = {Metodología de la investigación social},
	publisher = {Editorial Trillas},
	year = {1980.},
	address = {México},
	edition = {1a. ed. en español.},
	note = {Translation of: A methodology for social science.}
}