| 1. | Blueprint for new tourism / WTTCData Publicação: 2003 Col.autor: World Travel & Tourism Council |  | |
| 2. | Portugal: travel & tourism: a world of opportunity: the 2003 travel & tourism economic research / WTTCData Publicação: 2003 Col.autor: World Travel & Tourism Council | | |
| 3. | The Algarve: the impact of travel and tourism on jobs and the economy / World Travel & Tourism CouncilData Publicação: 2003 Col.autor: World Travel & Tourism Council | | |
| 4. | Travel and tourism security action plan: an action plan for countering the impact of global terrorism / World Travel & Tourism CouncilData Publicação: [2003] Col.autor: World Travel & Tourism Council | | |
| 5. | Algarve : o impacto das viagens e turismo no emprego e na economia / World Travel & Tourism CouncilData Publicação: 2003 Col.autor: World Travel & Tourism Council | | |