Bell, R., H. Jachmann, D. Chimbali, and E. Mulonda. “Illegal Activities and Law Enforcement in the Central Luangwa Valley, Zambia, from 1979 to 1992”. Pachyderm, vol. 16, no. 1, June 1993, pp. 81-82, https://pachydermjournal.org/index.php/pachyderm/article/view/764.