Worster, Donald. “Frontier and Western History in Central Brazil”. Historia Ambiental Latinoamericana y Caribeña (HALAC) revista de la Solcha 9, no. 1 (junho 18, 2019): 211–214. Acesso em novembro 8, 2026. https://www.halacsolcha.org/index.php/halac/article/view/364.