Wilson, Don E. & Reeder, DeeAnn M. (toim.): Cavia porcellusMammal Species of the World. A Taxonomic and Geographic Reference (3rd ed). 2005. Bucknell University. Viitattu 15.12.2010. (englanniksi)
Wilson, Don E. & Reeder, DeeAnn M. (toim.): CaviaMammal Species of the World. A Taxonomic and Geographic Reference (3rd ed). 2005. Bucknell University. Viitattu 15.12.2010. (englanniksi)