Não informado. (2008). Bulletin of Gunma Museum of Natural History. Gunma Museum of Natural History.
Chicago-referens (17:e uppl.)Não informado. Bulletin of Gunma Museum of Natural History. Tomioka, Japão: Gunma Museum of Natural History, 2008.
MLA-referens (8:e uppl.)Não informado. Bulletin of Gunma Museum of Natural History. Gunma Museum of Natural History, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.