Grubb, Peter (१६ नोभेम्बर २००५), "Order Artiodactyla (pp. 637-722)", in Wilson, Don E., and Reeder, DeeAnn M., eds, Mammal Species of the World: A Taxonomic and Geographic Reference (3rd संस्करण), Baltimore: Johns Hopkins University Press, 2 vols. (2142 pp.), आइएसबिएन 978-0-8018-8221-0, ओसिएलसी 62265494