BERTRAM, B. Black rhinos in captivity. Pachyderm, [S. l.], v. 4, n. 1, p. 16–16, 1984. DOI: 10.69649/pachyderm.v4i1.600. Disponível em: https://pachydermjournal.org/index.php/pachyderm/article/view/600. Acesso em: 3 may. 2026.