"Seiwa Tennō Ryō (清和天皇陵)". Nihon Rekishi Chimei Taikei (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-18.
"Seiwa Tennō". Nihon Daihyakka Zensho (Nipponika) (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-18.
"Seiwatennō-sha (清和天皇社)". Nihon Rekishi Chimei Taikei (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-18.
"Genealogy". Reichsarchiv (in Japanese). 30 April 2010. Retrieved 3 February 2018.
web.archive.org
"Seiwa Tennō Ryō (清和天皇陵)". Nihon Rekishi Chimei Taikei (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-18.
"Seiwa Tennō". Nihon Daihyakka Zensho (Nipponika) (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-18.
"Seiwatennō-sha (清和天皇社)". Nihon Rekishi Chimei Taikei (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-18.