Rączka, Piotr, and Bartłomiej Chludziński. “Control and Supervision on the Part of the Marshal of the Voivodship over Tour Operators and Tourist Entrepreneurs”. Studia Iuridica Toruniensia 27 (July 18, 2021): 289–308. Accessed July 21, 2024. https://apcz.umk.pl/SIT/article/view/SIT.2020.032.