@book{30272,
	author = {Ladrón de Guevara C, Laureano.},
	title = {Metodología de la Investigación científica :},
	publisher = {Universidad Santo Tomas,},
	year = {1983.},
	series = {Filosofía a distancia},
	address = {Bogotá :},
	edition = {3a. ed.}
}