Niall Ferguson, Colossus. The Rise and Fall of the American EmpireAllen Lane, Londen, 2004: Die Nuwe Amerikaanse Ryk . Historia, [S. l.], v. 50, n. 1, 2021. Disponível em: http://jsaa.ac.za/index.php/historia/article/view/2460.. Acesso em: 16 mar. 2025.