@book{1300,
	author = {Beveridge, W. I. B. and Grillo, Oswaldo},
	title = {El arte de la investigación científica /},
	publisher = {Universidad Central de Venezuela ,},
	year = {1966.},
	address = {Caracas :},
	note = {Originally published: Rev. ed. New York : W.W. Norton, c1957.}
}