RÓŻYCKI, Paweł. Geotourism and industrial tourism as the modern forms of tourism. Geotourism/Geoturystyka, [S. l.], n. 22-23, p. 39, DOI: 10.7494/geotour.2010.22-23.39. Disponível em: https://journals.agh.edu.pl/geotour/article/view/643. Acesso em: 9 apr. 2025.