CHRISTIAN, David. Contingency, Pattern and the S-curve in Human History. World History Connected, [S. l.], v. 21, n. 1, 2024. DOI: 10.13021/whc.v21i1.4111. Disponível em: https://journals.gmu.edu/whc/article/view/4111. Acesso em: 21 nov. 2024.