APA

American Museum of Natural History, . (1881). Bulletin of the American Museum of Natural History. Nueva York (EE.UU.): [American Museum of Natural History].

Chicago

American Museum of Natural History, . 1881. Bulletin of the American Museum of Natural History. Nueva York (EE.UU.): [American Museum of Natural History].

Harvard

American Museum of Natural History, . (1881). Bulletin of the American Museum of Natural History. Nueva York (EE.UU.): [American Museum of Natural History].

MLA

American Museum of Natural History, . Bulletin of the American Museum of Natural History. Nueva York (EE.UU.): [American Museum of Natural History]. 1881.