Cita APA (7th ed.)
National Geographic Society. Enciclopedia de los Animales National Geographic. National Geographic Society.
Cita Chicago (17th ed.)
National Geographic Society. Enciclopedia De Los Animales National Geographic. National Geographic Society.
Cita MLA (9th ed.)
National Geographic Society. Enciclopedia De Los Animales National Geographic. National Geographic Society.
Atenció: Aquestes cites poden no estar 100% correctes.