Greene, E. Anatomy of the rat. New York, Hafner Publishing Company, 1963.
Langer, P. The digestive tract and life history of small mammals. Mammal Rev., 32:107-31, 2002.
Nomina Anatomica Veterinaria (NAV). Fifth ed. International Committee on Veterinary Gross Anatomical Nomenclature (I.C.V.G.A.N.) and authorized by the General Assembly of the World Association of Veterinary Anatomists (W.A.V.A.). Knoxville, TN (U.S.A.) 2003. Published by the Editorial Committee.