@book{12150,
	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 = {Traducción de: A methodology for social science.}
}