Turismo acessível, estabelecimentos hoteleiros. Norma Portuguesa : Norma Portuguesa / Instituto Português da Qualidade
Rules of engagement: The role of emotional display rules in delivering conservation interpretation in a zoo-based tourism context / Aaron J.C. Wijeratne [et al.]
Ecotourism as a conservation tool and its adoption by private protected areas in Brazil / Fernanda de Vasconcellos Pegas, J. Guy Castley