@book{67571,
	author = {L. Sprague De, Camp and L. Sprague De, Camp},
	title = {Que no caigan las tinieblas},
	publisher = {Fondo de Cultura Económica, },
	year = {[Fecha de publicación no identificada]},
	series = {Colección Popular},
	address = {[México D.C., Mexico] :},
	url = {https://public.digitaliapublishing.com/a/134184}
}