LIPIEC, Józef. On the identity of the art of sport. In: KOWALSKA, Jolanta E.; KAŹMIERCZAK, Arkadiusz (eds.). Physical education, sport and olympism from a pedagogical perspective. Poland: Lodz University Press,2023. p. 257–267. DOI: 10.18778/8331-324-5-17. Disponível em: https://www.press.uni.lodz.pl/index.php/wul/catalog/book/592/chapter/1592. Acesso em: 21 jan. 2026.