Jastrzębska, Joanna. “Absenteeism in Physical Education Lessons Among High School Students”. In Contemporary Problems of Physical and Health Culture, edited by Jolanta Elżbieta Kowalska, Anna Makarczuk, Anna Maszorek-Szymala, and Arkadiusz Kaźmierczak, 53–66. Poland: Lodz University Press, 2022. Accessed January 25, 2026. https://www.press.uni.lodz.pl/index.php/wul/catalog/book/1255/chapter/3617.