Ratajczak J, Wieczorek M, Rutkowski G. Analysis of Recreational Diving Training According to the CMAS International Diving Confederations, SSI Diving School System and American NAUI and PADI Associations. sjgmu [Internet]. 2023 Mar. 31 [cited 2024 May 4];(125):40-53. Available from: https://sjgmu.umg.edu.pl/index.php/sjgmu/article/view/301