STYPEREK, Jarosław. Marked Tourist Paths in Polish National Parks. Turyzm/Tourism, Poland, v. 11, n. 1, p. 25–37, 2001. DOI: 10.18778/0867-5856.11.1.03. Disponível em: https://www.czasopisma.uni.lodz.pl/tourism/article/view/10104. Acesso em: 8 aug. 2026.