@book{257215,
	author = {Watzlawick, Paul, and Villanueva Salas, Marciano,},
	title = {¿Es real la realidad? :},
	publisher = {Herder Editorial,},
	year = {[1979]},
	address = {Barcelona :},
	url = {https://www.digitaliapublishing.com/a/60837/}
}