1993
“Economic Incentives For Conserving Biodiversity: Lessons For Africa”. Ambio 22 (2/3): 144-150. http://www.jstor.org/stable/4314059.
. 1993. 1990
Conserving The World's Biological Diversity. Gland, Switzerland and Washington, DC: International Union for Conservation of Nature and Natural Resources; World Resources Institute; Conservation International; World Wildlife Fund-US; World Bank. http://www.worldcat.org/oclc/21193600.
. 1990. 1988
“Iucn And Indigenous Peoples: How We Can Work Together To Promote Sustainable Development”. In Paper Presented At Fourth Annual General Assembly, Indigenous Survival International, June 15-17, 1988, Fort Yukon, Alaska. Fort Yukon, AK: International Union for Conservation of Nature and Natural Resources (IUCN).
. 1988. 1985
“Native Cultures And Protected Areas: Management Options”. In Culture And Conservation: The Human Dimension In Environmental Planning, 33-44. London: Croom Helm.
. 1985.