References
- Bostock , D.E. and Owen , L.N. 1975 . A Colour Atlas of Neoplasia in the Cat, Dog and Horse , London, , U.K. : Wolfe Medical Publications Ltd. .
- Jubb , K.V.F. and Kennedy , P.C. 1970 . Pathology of Domestic Animals , 2nd edition , New York and London : Academic Press .
- Moulten , J.E. 1961 . Tumors of Domestic Animals , Berkley and Los Angeies : University of Californis Press .