| 1. | Algarve : o impacto das viagens e turismo no emprego e na economia / World Travel & Tourism CouncilData Publicação: 2003 Col.autor: World Travel & Tourism Council |  | |
| 2. | Progress and priorities 2004/2005 / World Travel & Tourism CouncilData Publicação: 2005 Col.autor: World Travel & Tourism Council | | |
| 3. | Travel & tourism economic impact: Portugal / World Travel & Tourism CouncilData Publicação: 2010 Col.autor: World Travel & Tourism Council | | |
| 4. | Positions: the future of air travel an action plan for sustainable growth - a report by the WTTC infrastructure task force / World Travel & Tourism CouncilData Publicação: 2003 Col.autor: World Travel & Tourism Council | | |
| 5. | Travel & tourism 2011 / World Travel & Tourism CouncilData Publicação: 2011 Col.autor: World Travel & Tourism Council | | |