Italy

• Guido Bartolo, Antonio Franco Fadda (1999): Il mondo sotterraneo, Coedisar, Calgari, pp. 304, 16x24 cm, € 30,98. Coedisar ()
• I.S. Liso, M. Chieco, A. Fiore, L. Pisano, M. Parise (2020): Underground Geosites and Caving Speleotourism: Some Considerations, From a Case Study in Southern Italy,
  Geoheritage 12, 13 (2020).
  DOI
• Elena Bauer, Giovanni Caprara (2016): Meraviglie sotterranee, Guide Touring, Touring Editore, ISBN - EAN: 9788836568178 ()
  Touring Club Store
• Arrigo A. Cigna, Paolo Forti (1995): The show caves in Italy, La Venta Association pdf