Die veranderende grense van "Transvaal", 1840-1994. Historia, [S. l.], v. 41, n. 2, p. 11–17, 2021. DOI: 10.17159/hasa.v41i2.1668. Disponível em: http://www.jsaa.ac.za/index.php/historia/article/view/1668. Acesso em: 7 nov. 2025.