Alfred L. Gardner. Curator of North American mammals and Chief of Mammal Section, National Biological Service, Smithsonian Institution, National Museum of Natural History, Washington, DC, USA
Wilson, Don E., and DeeAnn M. Reeder, eds. 2005-10-01. Mammal Species of the World: A Taxonomic and Geographic Reference, 3rd ed., vols. 1 & 2. Johns Hopkins University Press. Baltimore, Maryland, USA. 2142. 0-8018-8221-4. .
Wilson, Don E., and DeeAnn M. Reeder, eds. 1992-01-01. Mammal Species of the World: A Taxonomic and Geographic Reference, 2nd ed., 3rd printing. Smithsonian Institution Press. Washington, DC, USA. xviii + 1207. 1-56098-217-9. Corrections were made to text at 3rd printing.
Nowak, Ronald M. 1991-01-01. Walker's Mammals of the World, vol. 1, 5th ed.. The Johns Hopkins UniversityPress. Baltimore and London. 1629. 0-8018-3970-X. .
Wilson & Reeder, eds. (2005): Comments: Traditionally included in Marsupialia. Included in Order Polyprotodonta by Reig et al. (1987); considered a separate order by Aplin and Archer (1987) and Marshall et al. (1990). Phylogenetically allied with australidelphian marsupials (e.g., Spotorno et al., 1997; Burk et al., 1999)