VON LUDWIG, C. F. H. A statement regarding the Cochineal, the Coccus Cacti. Lin. South African Quarterly Journal, Cape Colony, v. 1, n. 5, p. 46–48, 1831. DOI: 10.21504/saqj.15.2599. Disponível em: https://journal.ru.ac.za/index.php/saqj/article/view/2599. Acesso em: 20 nov. 2025.