1.		Tourist safety and security : practical measures for destinations / World Tourism Organization Data Publicação: 1996 Col.autor: OMT COTA(S): 6195; 6195-a
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 COTA(S): 9149-I; 9149-I.a