Cinco razões para visitar jardim zoológico / Vítor Costa
Guia dos mamíferos do Parque Nacional de Cantanhez : Guiné-Bissau / Nicolas Bout [et al.]
Towards a conceptual framework for wildlife tourism / Paul C. Reynolds, Dick Braithwaite
A history and market analysis of tourism in Tanzania / Derek J. Wade, B. C. Mwasaga, Paul F. J. Eagles