HERMANN, Wesley P. Malthus and Darfur. URJ-UCCS: Undergraduate Research Journal at UCCS, [S. l.], v. 1, n. 2, p. 22–24, 2008. Disponível em: https://urj.uccs.edu/index.php/urj/article/view/7. Acesso em: 23 feb. 2025.