Kocjan, J. “Poziom lęku I Depresji U pacjentów Poddanych Rehabilitacji Sanatoryjnej = The Level of Anxiety and Depression in Patients Undergoing Rehabilitation Treatment in a Sanatorium”. Journal of Education, Health and Sport, vol. 5, no. 5, May 2015, pp. 389-00, https://apcz.umk.pl/JEHS/article/view/2707.