LINTVEDT, Ane. Free and Unfree Labor: A Review Essay. World History Connected, [S. l.], v. 1, n. 2, 2004. DOI: 10.13021/whc.v1i2.5459. Disponível em: https://journals.gmu.edu/whc/article/view/5459. Acesso em: 3 jan. 2026.