TOIT, R. Suggested procedure for priority ranking of black rhino populations. Pachyderm, [S. l.], v. 11, n. 1, p. 7–10, 1989. DOI: 10.69649/pachyderm.v11i1.673. Disponível em: https://pachydermjournal.org/index.php/pachyderm/article/view/673. Acesso em: 13 may. 2026.