SCHROEDER, George H. Oregon’s "Red Hats". Indian Forester, [S. l.], v. 68, n. 4, p. 230–232, 1942. DOI: 10.36808/if/1942/v68i4/22010. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/22010. Acesso em: 29 oct. 2025.