1. Andersson, I., Andersson, H., Christiansson, A., Lindmark-Månsson, H., Oskarsson, M., Persson, Y. & Widell, A., 2011. Systemanalys Celltal. Stockholm: Svensk Mjölk Forskning. Nr. 7091
2. Bitew, M., Tafere, A. and Tolosa, T., 2010. Study on Bovine Mastitis in Dairy Farms of Bahir Dar and its Environs, Journal of Animal and Veterinary Advances, 9 (23), 2912–2917
3. Byarugaba, D. K., 2004. A view on antimicrobial resistance in developing countries and responsible risk factors, International Journal of Antimicrobial Agents, 24:2, 105–110
4. Byarugaba, D. K., Nakavuma, J. L., Vaarst, M. and Laker, C., 2008. Mastitis occurrence and constraints to mastitis control in smallholder dairy farming systems in Uganda, Livestock Research for Rural Development 20:1
5. Clinical and Laboratory Standards Institute. 2007. Performance Standards for Antimicrobial Susceptibility Testing; Seventeenth Informational Supplement. CLSI document M100-S17. Wayne Pennsylvania, USA:, 27:1 1–182 (ISBN 1-56238-625-5)