ŚPIEWAK, Adam. Building stone used in architectural objects in the town of Wieluń. Geotourism/Geoturystyka, [S. l.], n. 38-39, p. 19, 2017. DOI: 10.7494/geotour.2014.38-39.19. Disponível em: https://journals.agh.edu.pl/geotour/article/view/2515. Acesso em: 12 apr. 2025.