BELL, Charles. Notes on South African Bored Stones, or Perforated Stone Balls, and a Hafted Stone Axe from South Australia, presented to the Museum; with Notice of Cave Paintings in South Africa. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 11, p. 140–145, 1875. DOI: 10.9750/PSAS.011.140.145. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5735. Acesso em: 7 may. 2024.