Piróg, Danuta. “Labour-Related Issues in Polish Research on Tourism in the 21st Century: Evolution of Trends, Paradigms and Approaches”. Studies of the Industrial Geography Commission of the Polish Geographical Society 32, no. 3 (September 21, 2018): 263–274. Accessed April 27, 2024. https://prace-kgp.uken.krakow.pl/article/view/20801653.323.17.