1. Botha, J., Witkowski, E. F. T. & Shackleton, C. M. (2004). The medicinal plant trade on the western boundary of the Kruger National Park. In M. J.Lawes, H. C.Eely, C. M.Shackleton, & B. S.Geach (Eds.), Indigenous forests and woodlands in South Africa: Policy, people and practice. Pietermaritzburg: University of KwaZulu-Natal Press.
2. Carney, D. (1998). Implementing the sustainable rural livelihoods approach. In D.Carney (Ed.), Sustainable rural livelihoods: What contribution can we make?London: Department for International Development.
3. Women-Headed Households: Poorest of the Poor?:Perspectives from Mexico, Costa Rica and the Philippines
4. Clarke, J. & Grundy, I. M. (2004). The socio-economics of forest and woodland resourceuse: A hidden economy. In M. J.Lawes, H. C.Eely, C. M.Shackleton, & B. S.Geach (Eds.), Indigenous forests and woodlands in South Africa: Policy, people and practice. Pietermaritzburg: University of KwaZulu-Natal Press.