WILKINSON, D. World-Economic Theories and Problems: Quigley vs. Wallerstein vs Central Civilization. Journal of World-Systems Research, [S. l.], v. 2, n. 1, p. 117–185, 1996. DOI: 10.5195/jwsr.1996.63. Disponível em: http://jwsr.pitt.edu/ojs/jwsr/article/view/63. Acesso em: 9 dec. 2022.