Githiori, J. B. 2004.Evaluation of anthelmintic properties of ethnoveterinary plant preparations used as livestock dewormers by pastoralists and small holder farmers in Kenya. PhD thesis, Swedish University of Agricultural Sciences.
Twikirize, D. 2005. An assessment of traditional water management practices and their implications for improved water governance in the Limpopo Basin: case of the Sibasa Dam in Mzingwane Catchment, Zimbabwe. Thesis (MSc). Harare, Zimbabwe: University of Zimbabwe.