Dębska, Urszula, Małgorzata Kałwa, Anna Juszkiewicz, and Halina Guła-Kubiszewska. 2016. “Health Activity in the Context of the Sense of Coherence and Self-Esteem of Participants of Specialised Training”. Journal of Education, Health and Sport 6 (13):65-81. https://apcz.umk.pl/JEHS/article/view/4152.