Waarneming in die Geskiedenis metodologie : teorieformulering en bronbepaling. Historia, [S. l.], v. 40, n. 2, p. 1–19, 2021. DOI: 10.17159/hasa.v40i2.1700. Disponível em: http://www.jsaa.ac.za/index.php/historia/article/view/1700. Acesso em: 7 nov. 2025.