Bartoszek, A., Szalast, K., Sagan, A. and Korga, W. (2018) “Analysis of selected factors related to sleep disorders on a group of older people”, Journal of Education, Health and Sport, 8(9), pp. 584–592. Available at: https://apcz.umk.pl/JEHS/article/view/5928 (Accessed: 24 April 2024).