WARSZYŃSKA, Jadwiga. The Main Research Problems in the Geography of Tourism. Turyzm/Tourism, Poland, v. 9, n. 1, p. 37–50, 1999. DOI: 10.18778/0867-5856.9.1.03. Disponível em: https://www.czasopisma.uni.lodz.pl/tourism/article/view/10292. Acesso em: 25 may. 2026.