Baptista, Leandro, e Diego Geovan dos Reis. “The Geotourism Industry in the 21st Century: The Origin, Principles, and Futuristic Approach (2020)”. Revista Espaço E Geografia, vol. 24, nº 1, janeiro de 2022, p. 1-5, doi:10.26512/2236-56562021e40261.