Não informado. (2008). Bulletin of Gunma Museum of Natural History. Gunma Museum of Natural History.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin of Gunma Museum of Natural History. Tomioka, Japão: Gunma Museum of Natural History, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin of Gunma Museum of Natural History. Gunma Museum of Natural History, 2008.
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