21.		Impact of completion of the internal market on the tourism sector / Commission of the European Communities, DG XXIII Data Publicação: 1993 Col.autor: Comunidade Europeia. DG XXIII
22.		Global tourism forecasts to the year 2000 and beyond / Published by the World Tourism Organization Data Publicação: 1994- Col.autor: OMT
23.		What is ethnic tourism? An australian perspective / Brian King Autor: King, Brian
24.		Les visages du terrorisme / Robert Lanquar Autor: Lanquar, Robert
25.		The 1992 challenge for the hotel , restaurant and café industry [[policopiado]] / Hotrec Data Publicação: cop. 1989 Col.autor: Hotrec
26.		Aviation and tourism policies : balancing the benefits / World Tourism Organization Data Publicação: 1994 Co col. autor sec.: OMT
27.		L'Europe pour gagner Data Publicação: 1989
28.		Le transport aérienne et sa problématique dans les pays en développement / Gabriel Wackermann Autor: Wackermann, Gabriel
29.		Round table on tourism and aviation: the impact of new trends Col.autor: OMT
30.		Travel and Tourism in the single european market / by Jim Fitzpatrick and Associates Autor: Fitzpatrick, Jim Data Publicação: 1989 Co col. autor sec.: EIU