Sakuma, Masahide. "30th anniv". Masahide Sakuma [homepage] (in Japanese). Masahide Sakuma. Archived from the original on 2014-02-01. Retrieved 2015-04-20.
web.archive.org
Sakuma, Masahide. "30th anniv". Masahide Sakuma [homepage] (in Japanese). Masahide Sakuma. Archived from the original on 2014-02-01. Retrieved 2015-04-20.
"DISC13". Ashu-on. Chaos Union. Archived from the original on February 14, 2005.