NAPIERAŁA, Marek; MATUSZAK, Jerzy; ZUKOW, Walery. Congress of the Polish Chamber of Tourism - Egypt 2017. Journal of Education, Health and Sport, [S. l.], v. 7, n. 12, p. 53–76, 2017. Disponível em: https://apcz.umk.pl/JEHS/article/view/5103. Acesso em: 18 jan. 2025.