WOLAŃSKI, Napoleon. Duration of sleep in Polish children and youths. Anthropological Review, [S. l.], v. 50, n. 1, p. 129–132, 1984. DOI: 10.18778/1898-6773.50.1.12. Disponível em: https://czasopisma.uni.lodz.pl/ar/article/view/21023. Acesso em: 22 jul. 2024.