Cita APA (7a ed.)
National Geographic Society. Enciclopedia de los Animales National Geographic. National Geographic Society.
Cita Chicago Style (17a ed.)
National Geographic Society. Enciclopedia De Los Animales National Geographic. National Geographic Society.
Cita MLA (9a ed.)
National Geographic Society. Enciclopedia De Los Animales National Geographic. National Geographic Society.
Precaución: Estas citas no son 100% exactas.