1.		Le marché européen du tourisme des jeunes / Stephen Wheatcroft et John Seekings Autor: Wheatcroft, Stephen Data Publicação: [1995] Coautor: Seekings, John Co col. autor sec.: ETC
2.		Handbook on tourism product development / World Tourism Organization, European Travel Commission Col.autor: OMT Co col. autor: ETC
3.		The Decision-making Process of Meetings, Congresses, Conventions and Incentives Organizers / OMT, ETC Data Publicação: 2015 Col.autor: OMT ETC