Łubkowska, Wioletta, Mirosława Szark-Eckardt, and Hanna Żukowska. “Signs Binding at Indoor Pools As a System Supporting the Safety and Hygiene of Water Recreational and Sport Activity”. Quality in Sport 1, no. 3 (September 30, 2015): 7–19. Accessed August 17, 2024. https://apcz.umk.pl/QS/article/view/QS.2015.013.