^IISEE. "Search parameters page". Catalog of Damaging Earthquakes in the World (Through June, 2009). مؤرشف من الأصل في 2011-07-22. اطلع عليه بتاريخ 2011-08-23.
^Shozo Oda (2000). On earthquakes, numbers 4 and 5, Shiso, pp. 143. (Original : Kumamotoken Chiboshi, by Tadao Shimoma (1932).)