Questões chave em estratégias para turismo / Pedro Guedes de Carvalho
Structures and budegts of National Tourism Organizations, 2004-2005 / World Tourism Organization
India - the Asia and Pacific intra-regional outbound series / World Tourism Organization
ESHTE 15 anos. 1991-2006 / Escola Superior de Hotelaria e Turismo do Estoril
Aspects to justify public tourism promotion: an economic perspetive / Egon Smeral