(en)Maurice Burton, Robert Burton, International Wildlife Encyclopedia: Tree squirrel - water spider, vol. 2, Marshall Cavendish, (ISBN9780761472865, lire en ligne), p. 2769
(en) Jindrich Kazda, Ivo Pavlik, Joseph O. Falkinham III, Karel Hruska, The Ecology of Mycobacteria : Impact on Animal's and Human's Health, Dordrecht, Springer Science & Business Media, (ISBN978-1-4020-9413-2, lire en ligne), p. 207