Tourism Management : research, policies, practice / ed. Frances Brown
A Razão / dir. Luís Portela
Plano de acção promocional para 1989 / Instituto de Promoção Turística
Plano integrado de marketing 1989/91 / Instituto de Promoção Turística
Contribution to the drafting of a charter for cultural tourism [[policopiado]] : final report / Mark Dixon, [et al.]
DECRETO-LEI Nº 00203/89
Travel and Tourism in the single european market / by Jim Fitzpatrick and Associates