ទំព័រគំរូ:MSW3 Proboscidea
Shoshani, J. (2005). "Order Proboscidea". ជា Wilson, D. E.; Reeder, D. M. Mammal Species of the World (3rd រ.រ.). Johns Hopkins University Press. pp. 90–91. ល.ស.ប.អ. 978-0-8018-8221-0. ម.ប.គ.ល. 62265494. http://www.bucknell.edu/msw3.
