URLs

• http://ja.wikipedia.org/wiki/長岡康史
• https://anidb.net/creator/4234
• https://www.animenewsnetwork.com/encyclopedia/people.php?id=4604
• http://www7.atwiki.jp/anime_wiki/pages/4320.html
• http://diary4.cgiboy.com/0/nagaoka/
• http://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/creater.php?creater=1405
• http://homepage3.nifty.com/studio-x/text/nagaoka_folder/nagaoka%20-top.html