PODHORECKA, Marta et al. Sleep quality disorders among the people of old and presenile age. Journal of Education, Health and Sport, [S. l.], v. 7, n. 12, p. 322–338, 2017. Disponível em: https://apcz.umk.pl/JEHS/article/view/5181. Acesso em: 18 feb. 2025.