Tomaszewska, Katarzyna, Bożena Majchrowicz, and Alicja Kłos. “Assessment of the Efficiency of Cognitive Function of People over 65”. Journal of Education, Health and Sport 8, no. 5 (May 14, 2018): 185–198. Accessed January 14, 2025. https://apcz.umk.pl/JEHS/article/view/5487.