↑ Hutterer, Rainer (16 November 2005). Wilson, Don E., and Reeder, DeeAnn M.. ed. Mammal Species of the World (3rd ed.). Baltimore: Johns Hopkins University Press, 2 vols. (2142 pp.). pp. 220–311. ISBN 978-0-8018-8221-0. OCLC 62265494. http://www.bucknell.edu/msw3.
