1. Ademola, Ade: Women farmers in Ondo State, Nigeria. Journal of Anthropology Research University of Mexico, 50: 311-326 (1994).
2. Alexander, RD. The Biology of Moral Systems. Aldine (1987)
3. Becker GS. A Treatise on the Family. Enlarged Edition. Harvard University Press (1991).
4. Boserup, E. Women’s Role in Economic Development. Allen and Unwin, London (1970).
5. Clignet, R. Many Wives, Many Powers. North Western University Press, Evanston (1970).