1.		Integrating sustainability into business : a management guide for responsible tour operations / Xavier Font, Janet Cochrane; United Nations Environment Programme Autor: Font, Xavier Coautor: ; Cochrane, Janet Co col. autor sec.: United Nations Environment Programme
2.		Marketing sustainable tourism products / Xavier Font; Benjamin Carey Autor: Font, Xavier Coautor: ; Carey, Benjamin
3.		Integrating sustainability into business : an implementation guide for responsible tourism coordinators / Xavier Font, Janet Cochrane Autor: Font, Xavier Coautor: ; Cochrane, Janet Co col. autor sec.: United Nations Environment Programme