1.		Travel & tourism : a new economic perspective / World Travel & Tourism Council Data Publicação: 1993 Col.autor: World Travel & Tourism Council
2.		Travel & tourism : a new economic perspective / World Travel & Tourism Council Data Publicação: 1995 Col.autor: World Travel & Tourism Council
3.		European Union : travel & tourism / World Travel & Tourism Council Data Publicação: 1997 Col.autor: World Travel & Tourism Council
4.		Australia travel & tourism : a new economic perspective / World Travel & Tourism Council Data Publicação: 1996 Col.autor: World Travel & Tourism Council
5.		United States travel & tourism : a new economic perspective / World Travel & Tourism Council Data Publicação: 1995 Col.autor: World Travel & Tourism Council
6.		Mexico travel & tourism : millennium vision / World Travel & Tourism Council Data Publicação: 1996 Col.autor: World Travel & Tourism Council
7.		United Kingdom travel & tourism : millennium vision / World Travel & Tourism Council Data Publicação: 1996 Col.autor: World Travel & Tourism Council
8.		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
9.		European Union travel & tourism : towards 1996 and beyond / World Travel & Tourism Council Data Publicação: 1995 Col.autor: World Travel & Tourism Council
10.		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