Straw, Barbara E. [and others] (eds.), Diseases of Swine, Iowa State University Press, Ames, USA, 1999.
Charlton, B. R. [and others] (eds.), Avian Disease Manual, American Association of Avian Pathologists, Kennett Square, USA, 2000.
Pugh, D. G. (ed.), Sheep and Goat Medicine, W. B. Saunders, Philadelphia, USA, 2002.
Boden, Edward (ed.), Black's Veterinary Dictionary, Barnes & Noble Books, Lanham, USA, 2001.
Merck’s veterinary manual. (8th edition) http://www.merckvetmanual.com/mvm/index.html.
Hall, H. T. B., Diseases and Parasites of Livestock in the Tropics, Intermediate tropical Agriculture Series, London, UK, 1988.
Rural Development Series Handbooks No. 4, 5, 16. DPI, 1976, 1977, 1980.
Sainsbury, D., Animal Health, Granada, London, UK, 1983.