Policy and practice for global tourism / OMT
"Turismo é essencial para a economia de Portugal" / Miguel Quintas
Global Report on the power of youth travel : Affiliate members report: volume thirteen / World Tourism Organization (UNWTO)
La Fiscalidade del Turismo / OMT
Comercio Electrónico y Turismo : Guia práctica para destinos e empresas / OMT
Research on International Experiences in measuring tourism Expenditure Associated with inbound tourism : (Version 1.0)
Tourism as an International traded service : A guide for measuring arrivals and associated expenditures of non-residents