1. Ulijaszek SJ, Strickland SS. Nutritional anthropology: prospects and perspectives. London: Smith-Gordon; 1993.
2. Richards A. Hunger and work in a savage tribe: a functional study of nutrition among the Southern Bantu. London: Routledge and Kegan Paul; 1932.
3. Richards A. Land, labour, and diet in Northern Rhodesia: an economic study of the Bemba tribe. Oxford: Oxford University Press; 1939.
4. McElroy A, Townsend PK. Medical anthropology in ecological perspective. North Scituate, Massachusetts: Duxbury Press; 1979.
5. Pianka ER. Evolutionary ecology. New York: Harper and Row; 1974.