ŻABA, J.; GAIDZIK, K. The Ngorongoro Crater as the biggest geotouristic attraction of the Gregory Rift (Northern Tanzania, Africa) – geotouristic valorization, touristic development and hazard. Geotourism/Geoturystyka, [S. l.], n. 24-25, p. 47, DOI: 10.7494/geotour.2011.24-25.47. Disponível em: https://journals.agh.edu.pl/geotour/article/view/934. Acesso em: 6 may. 2024.