If you too spent the early 1980s in a marijuana-and-Tolkien-induced haze, then you probably have these comics in your collection:
Marvel also did a Labyrinth book, if that's your thing. I like both movies but I think I prefer the D&D epicness of The Dark Crystal to the Bowie camp of Labyrinth. But, on the other hand, pissing dwarves. So they're both great.