WIĄCEK, A. Sleep quality and awareness of factors affecting insomnia among people over the age of 20. Journal of Education, Health and Sport, [S. l.], v. 8, n. 9, p. 1509–1529, 2018. Disponível em: https://apcz.umk.pl/JEHS/article/view/6078. Acesso em: 13 apr. 2024.