1.		Portugal, os organismos internacionais e o turismo / Maria José de Vallêra Data Publicação: 1990 Coautor: Vallêra, Maria José de Col.autor: Portugal. Direcção-Geral do Turismo
2.		New sources of tourism statistics : user experience by the European Travel Commission and the European Tourism Action / L.J. Lickorish Autor: Lickorish, Leonard J.
3.		The OECD Tourism Committee: role and activities in tourism statistics / Alain Dupeyras Autor: Dupeyras, Alain
4.		Protection et securité des touristes : mesures pratiques pour les destinations / Organisation Mondiale du Tourisme Data Publicação: 1997 Col.autor: OMT
5.		W.T.O. : World Tourism Organization / World Tourism Organization Data Publicação: [1997?] Col.autor: OMT
6.		OMT : Organización Mundial del Turismo / Organización Mundial del Turismo Data Publicação: [1997?] Col.autor: OMT
7.		OMT : Organisation Mondiale du Tourisme / Organisation Mondiale du Tourisme Data Publicação: [1997?] Col.autor: OMT
8.		In search of professionalism for the 21st century: the need for standards in tourism education in a changing marketplace / Chuck Y. Gee Autor: Gee, Chuck Y.
9.		Increased international competition: new challenges for tourism policies in european countries / Peter Keller and Egon Smeral Autor: Keller, Peter Coautor: ; Smeral, Egon
10.		The World Tourism Organization (WTO) faced with changes affecting member states in the european region / Francesco Frangialli Autor: Frangialli, Francesco