@book{409,
	author = {Ander-Egg, Ezequiel.},
	title = {Técnicas de investigación social /  },
	publisher = {Lumen;},
	year = {1995.},
	address = {Buenos Aires: },
	edition = {24a ed.},
	note = {Ander-Egg, E. (1995). Técnicas de investigación social. (24a ed.). Buenos Aires : Lumen.}
}