LEWIS, Leslie. Some remarks on the Bushmen of the Orange River. South African Quarterly Journal, Cape Colony, v. 1, n. 1, p. 79–82, 1828. DOI: 10.21504/saqj.11.2620. Disponível em: https://journal.ru.ac.za/index.php/saqj/article/view/2620. Acesso em: 20 nov. 2025.