GRZELAK, Julia. The tourist activity of fitness trainers and participants of groups based on Lodz fitness clubs. In: MAKOWSKA-ISKIERKA, Marzena; WOJCIECHOWSKA, Jolanta (eds.). Turystyka w badaniach podstawowych. Warsztaty z Geografii TuryzmuPoland: Lodz University Press,2023. v. 13. DOI: 10.18778/8331-251-4.05. Disponível em: https://www.press.uni.lodz.pl/index.php/wul/catalog/book/293/chapter/772. Acesso em: 14 feb. 2026.