Karczewska, Wiktoria, and Rafał Gotowski. “Financial Aspects of the Use of Locks and Waterways in Tourism. Example of a Lock in Pakosc”. Journal of Education, Health and Sport 9, no. 1 (January 31, 2019): 488–494. Accessed April 24, 2024. https://apcz.umk.pl/JEHS/article/view/7357.