@book{4367,
	author = {Guzmán Campos, Germán, and Fals Borda, Orlando},
	title = {La violencia en Colombia :estudio de un proceso social /Germán Guzmán Campos, Orlando Fals Borda, Eduardo Umaña Luna.},
	publisher = {Punta de Lanza, },
	year = {1977.},
	series = {Colombia hoy , 33},
	address = {Bogotá :},
	edition = {Octava edición.}
}