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: https://upjournals.up.ac.za/index.php/historia/article/view/2827.. Acesso em: 31 jan. 2025.