The Game Master'S Book of Traps, Puzzles and Dungeons: A Punishing Collection of Bone-Crunching Contraptions, Brain-Teasing Riddles and. Rpg Adventures (The Game Master Series) (en Inglés)
Ashworth, Jeff ; Hilton, Kyle ; Bhullar, Jasmine
Media Lab Books, 2022, Tapa Dura, Nuevo