1. Sisson and Grossman’s The Anatomy of the Domestic Animals;McLelland,1975
2. Clinicopathological Principles for Veterinary Medicine;Huxtable,1988
3. Sturkie’s Avian Physiology;Denbow,2000
4. Sturkie’s Avian Physiology;Hazelwood,2000
5. Effects of feeding on plasma uric acid and urea concentrations in Blackfooted Penquins (Spheniscus demersus);Kolmsetter;J Avian Med Surg,2000