1. Abe, L. O., and S. K. Imbamba. 1977. Levels of vitamins A and C in some Kenyan vegetable plants. East African Agriculture and Forestry Journal 42: 316–321.
2. Agnew, A. D. Q. 1974. Upland Kenya wild flowers. A flora of the ferns and herbaceous flowering plants of upland Kenya. Oxford University Press, Oxford.
3. Ambrose, S. 1986. Hunter-gatherer adaptations to non-marginal environments: an ecological and archaeological assessment of the Dorobo model. Sprache und Geschichte in Afrika 7.2:11–42.
4. Anderson, E. 1952. Plants, man and life. University of California Press, Berkeley.
5. Anzaya, M. 1987. Seasonal variations in the consumption of selected indigenous vegetables by five households in Machakos District. M.A. thesis, Kenyatta University, Nairobi, Kenya.