@book{78309,
	author = {Watzlawick, Paul, and Villanueva Salas, Marciano,},
	title = {El lenguaje del cambio :},
	publisher = {Herder,},
	year = {2012.},
	address = {Barcelona :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/61124/}
}