LEADER-WILLIAMS, N. The cost of conserving elephants. Pachyderm, [S. l.], v. 17, n. 1, p. 30–34, 1993. DOI: 10.69649/pachyderm.v17i1.780. Disponível em: https://pachydermjournal.org/index.php/pachyderm/article/view/780. Acesso em: 18 jun. 2026.