“The Geotourism Industry in the 21st Century: The Origin, Principles, and Futuristic Approach (2020)”. Revista Espaço e Geografia 24, no. 1 (janeiro 21, 2022): 1–5. Acessado novembro 23, 2024. https://periodicostestes.bce.unb.br/index.php/espacoegeografia/article/view/40261.