https://www.britannica.com/topic/Shugen-do#ref101681
https://en.wikipedia.org/wiki/Shugend%C5%8D
http://www.onmarkproductions.com/html/shugendou.html
http://eos.kokugakuin.ac.jp/modules/xwords/entry.php?entryID=830
http://eos.kokugakuin.ac.jp/modules/xwords/entry.php?entryID=828
https://en.wikipedia.org/wiki/Shikigami
http://www.jinjahoncho.or.jp/en/faq/
http://eos.kokugakuin.ac.jp/modules/xwords/entry.php?entryID=248
http://eos.kokugakuin.ac.jp/modules/xwords/
http://www.onmarkproductions.com/html/shinto-priesthood.html
http://eos.kokugakuin.ac.jp/modules/xwords/entry.php?entryID=1285
Links: https://en.wikipedia.org/wiki/Kama_(weapon)
https://en.wikipedia.org/wiki/Arnis
http://blackbeltmag.com/daily/traditional-martial-arts-training/escrima/10-things-you-probably-didnt-know-about-the-filipino-martial-arts/
https://en.wikipedia.org/wiki/Oda_Nobunaga
https://www.samurai-archives.com/nobunaga.html