1. AECCG (1990) Elephant Action Plan. Fourth Edition, March 1990. AECCG/CITES.
2. Alexandre, D. Y. (1978) Le rôle disseminateur des éléphants en forêt de Taï, Côte d’Ivoire. La Terre et la Vie 32: 47–72.
3. Anon. (1989) Two gorillas arrive at Mexican Zoo. International Primate Protection League Newsletter 16(2): 3–4.
4. Aveling, C. and Aveling, R. (1989) Gorilla conservation in Zaïre. Oryx 23: 64–70.
5. Barnes, R. F. W. (1990) Deforestation trends in tropical Africa. African Journal of Ecology 28: 161–73.