FONER, Eric. Slavery and freedom in nineteenth-century America. Anos 90, Porto Alegre, RS, v. 7, n. 11, p. 14–37, 1999. DOI: 10.22456/1983-201X.6540. Disponível em: https://seer.ufrgs.br/index.php/anos90/article/view/6540. Acesso em: 2 ago. 2026.