@book{5602,
	author = {Sagan, Carl and Udina, Dolors},
	title = {El mundo y sus demonios},
	publisher = {Planeta},
	year = {2008},
	series = {La línea del horizonte},
	address = {Barcelona},
	edition = {14a. reimpresión },
	note = {Incluye datos biográficos }
}