1. Abdalla, H. S. (1985). Tsetse and Trypanosomiasis Information Quarterly,8, 52–53.
2. Boid, R., Jones, T. W. &Luckins, A. G. (1985).British Veterinary Journal,141, 75–105.
3. Coles, E. H. (1980).Veterinary Clinical Pathology, 3rd edn. W. B. Saunders Company, Philadelphia, p. 221.
4. Higgins, A. J. (1983).Veterinary Bulletin,53, 1089–1097.
5. Leese, A. S. (1927).A Treatise on the One-Humped Camel in Health and Disease. Haynes and Son, Stamford. p. 240.