Lore and Legend: Golem

From the entrance you need to travel round the pit, jump across into a tunnel, travel through the round room with the goos, through a room with some Servants of Varsoon, into corridors with some Golems, through a room past the undead tailors in the deep area of Ruins of Varsoon. A blue book on the short, tilted book shelf in the back of the room.
Note that the quest level shown in your journal will scale with your character level, up to level 50.