IGN: Ghosts 'n Goblins - Previewed by Craig Harris. "Yes, Capcom had a game with zombies before Resident Evil." - http://gameboy.ign.com/articles/132/132207p1.html
The Hawknest: Ghosts 'n Goblins - Comments on the C64 version, plus downloads. - http://hawknest.stacken.kth.se/c64/07top.html
GameSpot: Capcom Generation 2 - Collection of arcade classics Ghosts 'n' Goblins and Ghouls 'n' Ghosts, as well as Super Ghouls 'n' Ghosts, originally released on the Super NES. Reviewed by James Mielke, featuring screen shots. Score: 7.1 out of 10. (Saturn) - http://www.gamespot.com/saturn/action/capcomgeneration2/review.html
RetroFX - Halted project to emulate Ghosts'n Golbins with updated sound and graphics. Screen shots and sound downloads. - http://www.retrofx.com/
Ghosts'n'goblins instructions - Instructions for the Sinclair version. - http://www.nvg.ntnu.no/sinclair/instructions/ghostgob.html
Night Gem review - Reprinted Zzap 64 review of the 1986 Commodore 64 port by Elite Systems. - http://users.skynet.be/NightGem/c64_ghostsngoblins.htm
Emulation Status: Ghosts 'N Goblins - Capsule data on game emulated, with screen shots of it emulated with MAME. - http://emustatus.rainemu.com/games/gng.htm