Não informado. (1881). Bulletin of the American Museum of Natural History. American Museum of Natural History.
Chicago-viite (17. p.)Não informado. Bulletin of the American Museum of Natural History. New York: American Museum of Natural History, 1881.
MLA-viite (8. p.)Não informado. Bulletin of the American Museum of Natural History. American Museum of Natural History, 1881.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.