Hirschfeld, S. E. (1985). Ground sloths from the Friasian LaVenta fauna, with additions to the pre-Friasian Coyaima fauna of Colombia, South America. Univ. of California Pr.
Chicago-Zitierstil (17. Ausg.)Hirschfeld, Sue E. Ground Sloths from the Friasian LaVenta Fauna, with Additions to the Pre-Friasian Coyaima Fauna of Colombia, South America. Berkeley, Calif: Univ. of California Pr, 1985.
MLA-Zitierstil (9. Ausg.)Hirschfeld, Sue E. Ground Sloths from the Friasian LaVenta Fauna, with Additions to the Pre-Friasian Coyaima Fauna of Colombia, South America. Univ. of California Pr, 1985.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.