larwe.com: Double Dragon Provides technical details, music, and game information for the arcade version. http://www.larwe.com/coinop/double_dragon.html

Double Dragon 128k Diary of the project to make a version for ZX Spectrum 128K with improved graphics. http://home.btconnect.com/gamestyle/index.htm

The ZotGuide Series: Double Dragon V: The Shadow Falls Moves list for the SNES version. http://dlh.net/cheats/snes/english/double+dragon+v/faq.html