MODELSKI, G. Long-Term Trends in World Politics. Journal of World-Systems Research, [S. l.], v. 11, n. 2, p. 195–206, 2005. DOI: 10.5195/jwsr.2005.387. Disponível em: https://jwsr.pitt.edu/ojs/jwsr/article/view/387. Acesso em: 4 jul. 2025.