1.		Agenda 21 for the travel & tourism industry : towards environmentally sustainable development / World Travel & Tourism Council; World Tourism Organization Data Publicação: 1997 Co col. autor sec.: World Travel & Tourism Council OMT Earth Council COTA(S): 9149-I; 9149-I.a
2.		Air transport and freer world trade / World Travel & Tourism Council Data Publicação: 1997 Col.autor: World Travel & Tourism Council COTA(S): 6920
3.		The economic impact of travel and tourism development in the APEC region / World Travel & Tourism Council Data Publicação: 1998 Col.autor: World Travel & Tourism Council COTA(S): 7004
4.		The Algarve: the impact of travel and tourism on jobs and the economy / World Travel & Tourism Council Data Publicação: 2003 Col.autor: World Travel & Tourism Council COTA(S): 9316.02; 9316.02.a; 9316.02.b
5.		Lisboa : o impacte das viagens & turismo na economia e no emprego / World Travel and Tourism Coucil Data Publicação: 2007 Col.autor: World Travel & Tourism Council COTA(S): 11925; 11925.a; 11925-A; 11925.b
6.		Positions: the future of air travel an action plan for sustainable growth - a report by the WTTC infrastructure task force / World Travel & Tourism Council Data Publicação: 2003 Col.autor: World Travel & Tourism Council COTA(S): 12577
7.		Travel & tourism 2011 / World Travel & Tourism Council Data Publicação: 2011 Col.autor: World Travel & Tourism Council COTA(S): 14077-Dg