@book{46243,
	author = {Urrutia, Carlos.},
	title = {La investigación social},
	publisher = {Hvmanitas/Centro Latinoamericano de Trabajo Social},
	year = {1988.},
	series = {Colección Hvmanitas-CELATS},
	address = {Lima, Perú},
	edition = {1a ed.}
}