@book{78339,
	author = {Schulz von Thun, Friedemann, and Schulz, Ana,},
	title = {El arte de conversar :},
	publisher = {Herder,},
	year = {2012.},
	address = {Barcelona :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/61156/}
}