Não informado. (1901). Guide leaflets series. American Museum of Natural History.
Style de citation Chicago (17e éd.)Não informado. Guide Leaflets Series. New York: American Museum of Natural History, 1901.
Style de citation MLA (8e éd.)Não informado. Guide Leaflets Series. American Museum of Natural History, 1901.
Attention : ces citations peuvent ne pas être correctes à 100%.