1. Guinea pigs possess a highly mutated gene for L-gulono-γ-lactone oxidase, the key enzyme for L-ascorbic acid biosynthesis missing in this species;Nishikimi;J Biol Chem,1992
2. Behavior;Harper,1976
3. Biology, husbandry, and clinical techniques of guinea pigs and chinchillas;Quesenberry,2004
4. Diseases of Domestic Guinea Pigs;Richardson,2000
5. A Practitioners Guide to Domestic Rodents;Harkness,1993