Andries Pretorius se grondverkopings in Graaffreinet, 1837 tot 1838 : ’n hersiening van dr. G.S.Preller se gevolgtrekkings . Historia, [S. l.], v. 16, n. 1, 2021. Disponível em: http://www.jsaa.ac.za/index.php/historia/article/view/2827. Acesso em: 8 nov. 2025.