"法道" [Hōdō]. Nihon Jinmei Daijiten (日本人名大辞典) (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on August 25, 2007. Retrieved October 3, 2012.
"Genealogy". Reichsarchiv (in Japanese). April 30, 2010. Retrieved January 25, 2018.
web.archive.org
"法道" [Hōdō]. Nihon Jinmei Daijiten (日本人名大辞典) (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on August 25, 2007. Retrieved October 3, 2012.