[1] 大友皇子即位説 - Wikipedia ( (2014-07-02 14:32:41 +09:00 版)) http://ja.wikipedia.org/wiki/%E5%A4%A7%E5%8F%8B%E7%9A%87%E5%AD%90%E5%8D%B3%E4%BD%8D%E8%AA%AC

[2] 弘文天皇 - Wikipedia (2019-08-06 11:27:07 +09:00) https://ja.wikipedia.org/wiki/%E5%BC%98%E6%96%87%E5%A4%A9%E7%9A%87

[3] 喜田貞吉著作集3, 2020-07-13 16:27:33 +09:00 https://kiebine2007.amearare.com/kita.htm