Template:Okada & Kakuda, 1955
- Okada, Y. & Kakuda, T. 1955. 大台ヶ原・大杉谷の両生類・爬虫類 [Reptiles and amphibians of Ohdaigahara and Ohsugi region.] pp. 14–18. In 大杉谷・大台ヶ原の自然 [Nature of Ohsugi-dani and Ohdaigahara.] Natural Scientific Research Group of Ohdai and Ohsugi Region.