DE LA BECHE, Henry Thomas. Sketch of a classification of the European rocks. South African Quarterly Journal, Cape Colony, v. 1, n. 2, p. 149–159, 1830. DOI: 10.21504/saqj.12.2636. Disponível em: https://journal.ru.ac.za/index.php/saqj/article/view/2636. Acesso em: 20 nov. 2025.