1. Dohoo, I. R., Martin, S.W. and Stryhn H., 2009. Veterinary Epidemiologic Research. 2nd Edition. (VER Inc., Charlottetown, Canada).
2. Dohoo C., Guernsey J., Critchley K., VanLeeuwen J.A., 2012. Pilot study on the impacts of biogas digesters on respiratory health in women on Kenyan smallholder dairy farms. Journal of Environmental Public Health. DOI: 10.1155/2012/636298 .
3. Lago, A., Leslie, K., Dingwell, R., Ruegg, P., Timms, L. and Godden, S., 2006. Preliminary validation of an on-farm culture system. In: Proceedings of the 45th Annual Meeting of the National Mastitis Control Council, USA, pp. 290–291.
4. McCarron, J.L., Keefe, G.P., McKenna, S.L., Dohoo, I.R. and Poole, D.E., 2009. Laboratory evaluation of 3M Petrifilms and University of Minnesota Bi-plates as potential on-farm tests for clinical mastitis. Journal of Dairy Science, 92(5), 2297-2305.
5. Ministry of Livestock Development, 2008. District Livestock Production Office Annual Report. Kenya.