Stelmach, Paweł. “Spa Service Distribution and Specialisation in Kujawsko-Pomorskie, Pomorskie and Podkarpackie Voivodship Communes”. Turyzm/Tourism 27, no. 1 (June 30, 2017): 57–63. Accessed December 7, 2025. https://www.czasopisma.uni.lodz.pl/tourism/article/view/2211.