@book{45264,
	author = {Makua, Amaia,},
	title = {Improving sustainable tourism in XXIst century /},
	publisher = {Universidad de Deusto,},
	year = {2016.},
	series = {Documentos de estudios de ocio ;},
	address = {Bilbao :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/45122/}
}