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3. Hayasaka, S., Fukuda, Y. and Hayama, A., 1980, Discovery of molluscan fossils and the paleoenvironmental aspects of the Kumage Group, in Tane-ga-shima, south Kyushu, Japan. Prof. Saburo Kanno Mem. Vol., 59–70.
4. 早坂祥三・岡田博有・福田泰英・児島正憲, 1983, 種子島の地質．日本地質学会第90年学術大会巡検案内書, 113–134. ［Hayasaka, S., Okada, H., Hukuda, Y. and Kozima, M., 1983, Geology of the Tanegashima Island. 90th Annu. Meet. Geol. Soc. Japan, Excursion Guidebook, 113–134.］ English translation from the original written in Japanese.
5. 鹿児島県地質図編集委員会, 1990, 10万分の1鹿児島県地質図および同説明書．鹿児島県企画部企画調整課, 1–117. ［Editorial committee for geological map of Kagoshima Prefecture, 1990, Geological Map of Kagoshima Prefecture, scale 1: 100,000. Planning and Coordination Div., Planning Dept., Kagoshima Pref., 1–117.］