Delduque, Marcelo (c. 2000). "Preá" [Cavy]. Globo Rural. Ficha do bicho (in Brazilian Portuguese). Archived from the original on 2007-08-12. Retrieved 2022-02-10.
books.google.com
Eisenberg, John F.; Redford, Kent H. (15 May 2000). Mammals of the Neotropics. Vol. 3: Ecuador, Bolivia, Brazil. University of Chicago Press. p. 456. ISBN978-0-226-19542-1 – via Google Books.
Delduque, Marcelo (c. 2000). "Preá" [Cavy]. Globo Rural. Ficha do bicho (in Brazilian Portuguese). Archived from the original on 2007-08-12. Retrieved 2022-02-10.
Fitzinger, Leopold (1867). "Versuch einer natürlichen Anordnung der Nagethiere (Rodentia)" [Attempt at a natural arrangement of the rodents (Rodentia)]. Sitzungsberichte der Kaiserlichen Akademie der Wissenschaft zu Wien. Mathematische-naturwissenschaftliche Classe (in German). 55: 453–515. OCLC36832988 &{{cite journal}}: CS1 maint: postscript (link) "ibid". Op Cit. 56: 57–168. Note: Current references often incorrectly cite year 1857, instead of correct 1867.
Weir, Barbara J. (1974). "Notes on the origin of the domestic guinea-pig". In Rowlands, I.W.; Weir, Barbara J. (eds.). The Biology of Hystricomorph Rodents. Academic Press. pp. 437–446. OCLC1212331.