KOWALCZYK, Andrzej. Geography of tourism at the Warsaw University - Department of the Geography of Tourism and Recreation. Turyzm/Tourism, Poland, v. 18, n. 1, p. 87–88, 2008. DOI: 10.18778/0867-5856.18.1.10. Disponível em: https://czasopisma.uni.lodz.pl/tourism/article/view/10156. Acesso em: 9 aug. 2026.