URLs

• https://ja.wikipedia.org/wiki/須藤友徳
• https://anidb.net/creator/5850
• https://www.animenewsnetwork.com/encyclopedia/people.php?id=28016
• https://w.atwiki.jp/anime_wiki/pages/5657.html
• https://www.mobygames.com/person/817894
• https://myanimelist.net/people/23383
• https://vndb.org/s26588