Smithsonian Institution & Hennessy, K. (2010). Natural history: The ultimate visual guide to everything on Earth (1st American ed.). DK.
Cita Chicago Style (17a ed.)Smithsonian Institution y Kathryn Hennessy. Natural History: The Ultimate Visual Guide to Everything on Earth. 1st American ed. New York, N.Y.: DK, 2010.
Cita MLA (8a ed.)Smithsonian Institution y Kathryn Hennessy. Natural History: The Ultimate Visual Guide to Everything on Earth. 1st American ed. DK, 2010.
Precaución: Estas citas no son 100% exactas.