Thorington, R. W., Jr.; Hoffman, R. S. (2005). "Family Sciuridae". In Wilson, D. E.; Reeder, D. M (eds.). Mammal Species of the World (3rd ed.). Johns Hopkins University Press. pp. 754–818. ISBN 978-0-8018-8221-0. OCLC 62265494. {{cite book}}: Invalid |ref=harv (help)CS1 maint: multiple names: authors list (link)