WALPOLE, M.; BETT, P. An apparent decline in the Masai Mara black rhino population. Pachyderm, [S. l.], v. 26, n. 1, p. 123–123, 1998. DOI: 10.69649/pachyderm.v26i1.959. Disponível em: https://pachydermjournal.org/index.php/pachyderm/article/view/959. Acesso em: 25 apr. 2026.