1.		European Union : travel & tourism / World Travel & Tourism Council Data Publicação: 1997 Col.autor: World Travel & Tourism Council
2.		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
3.		European Union travel & tourism : towards 1996 and beyond / World Travel & Tourism Council Data Publicação: 1995 Col.autor: World Travel & Tourism Council
4.		Progress and priorities 2002/2003 / World Travel and Tourism Council Data Publicação: 2002 Col.autor: World Travel & Tourism Council
5.		Leading the challenge on climate change / World Travel & Tourism Council Data Publicação: 2009 Col.autor: World Travel & Tourism Council
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