GIBSON, D.; CRAIG, C. Estimating abundance of African wildlife: an aid to adaptive management, by Hugo Jachmann. Pachyderm, [S. l.], v. 31, n. 1, p. 76–76, 2001. DOI: 10.69649/pachyderm.v31i1.1068. Disponível em: https://pachydermjournal.org/index.php/pachyderm/article/view/1068. Acesso em: 25 apr. 2026.