Bacheller, Micah, e Sandro Dutra e Silva. “The Birth of National Parks: Culture and Nature in Visiting the Wilderness in the United States (1920-1940)”. História Revista 22, no. 2 (dezembro 24, 2017): 64–82. Acessado setembro 18, 2024. https://revistas.ufg.br/historia/article/view/46640.