APA Style

(U.S.), N, G, S., SPELMAN, L. (2012). Animal encyclopedia: 2,500 animals with photos, maps, and more! (1st ed.). : National Geographic.

MLA Style

(U.S.), National, Geographic, Society., SPELMAN, Lucy. "Animal encyclopedia: 2,500 animals with photos, maps, and more!". 1st ed. : National Geographic, 2012. Text.