Nałęcz, Hanna, Anna Ostrowska-Tryzno, and Anna Pawlikowska-Piechotka. 2018. “Outdoor Gyms As an Example of Outdoor Recreation Activity in Urbanized Areas”. Turyzm/Tourism 28 (1):65-71. https://doi.org/10.18778/0867-5856.28.1.16.