PLOEGER, Jan. Leiers na die Noorde. Studies oor die Groot Trek. Scientia Militaria - South African Journal of Military Studies, [S. l.], v. 6, n. 3, 2011. DOI: 10.5787/6-3-853. Disponível em: https://www.journals.ac.za/index.php/pub/article/view/853. Acesso em: 11 jun. 2026.