Não informado. (1951). Bulletin of the British Museum Natural History. British Museum of Natural History.
Chicago-viite (17. p.)Não informado. Bulletin of the British Museum Natural History. London: British Museum of Natural History, 1951.
MLA-viite (8. p.)Não informado. Bulletin of the British Museum Natural History. British Museum of Natural History, 1951.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.