SCHUMANN, N. A. Nationalism in National Geographic Magazine, 1888-1923. IU Journal of Undergraduate Research, [S. l.], v. 1, n. 1, p. 13–17, 2015. DOI: 10.14434/iujur.v1i1.13740. Disponível em: https://scholarworks.iu.edu/journals/index.php/iujur/article/view/13740. Acesso em: 20 jan. 2025.