@book{131555,
	author = {Rosario, José Colombán and Carrión, Justina},
	title = {El negro},
	publisher = {Universidad de Puerto Rico, Division de Impresos},
	year = {1951.},
	series = {Problemas sociales},
	address = {[Rio Piedras]},
	edition = {2 ed.},
	note = {Includes index.}
}