Facts and figures on the europeans on holiday 1997-1998 : executive summary / European Commission. Directorate General XXIII
L' euro : incidences sur le tourisme / Organisation mondiale du tourisme
WTO in Asia and the Pacific / World Tourism Organization
Inbound tourism short-term scenarios / Tourism Forecasting Council
O sector do turismo no norte de Portugal / Luís Delfim Santos; Rui Terrasêca
Os portugueses e a Expo'98 / Direcção-Geral do Turismo
Balanço da Expo 98: perspectivas de futuro / Associação dos Hotéis de Portugal, Associação Turismo de Lisboa
Characteristics of seven tourism generating countries / World Tourism Organization
Estudis de Turisme de Catalunya / Jordi Montaner i Montejano