URLs

• https://en.wikipedia.org/wiki/Katsuhiko_Nishijima
• https://ja.wikipedia.org/wiki/西島克彦
• https://anidb.net/creator/2322
• https://www.animenewsnetwork.com/encyclopedia/people.php?id=75
• https://www7.atwiki.jp/anime_wiki/pages/5012.html
• https://www18.atwiki.jp/sakuga/pages/1592.html