DOUGLAS-HAMILTON, I. Trends in key African elephant populations. Pachyderm, [S. l.], v. 4, n. 1, p. 7–9, 1984. DOI: 10.69649/pachyderm.v4i1.595. Disponível em: https://pachydermjournal.org/index.php/pachyderm/article/view/595. Acesso em: 30 may. 2026.