WOKITTEL, Robert. Colombia en la minería latinoamericana. Boletín Geológico, [S. l.], v. 16, n. 1-3, p. 113–160, 1968. DOI: 10.32685/0120-1425/bolgeol16.1-3.1968.120. Disponível em: https://revistas.sgc.gov.co/index.php/boletingeo/article/view/120. Acesso em: 31 ene. 2025.