Source of 2012-04-11

- http://www.dtp-transit.jp/utility/post_1465.html

- [http://ja.wikipedia.org/wiki/%E5%85%B5%E6%B3%95%E4%B8%89%E5%8D%81%E5%85%AD%E8%A8%88 兵法三十六計 ]

- http://www.sakura.ad.jp/news/sakurainfo/newsentry.php?id=644