Though it is an Ironforge Exchange item, any crafter (around level 15) can get this the recipe book easily.
If your character is from a good-aligned city, you need to do a series of quests for Envoy Tami Swifthammer.
If you are from an evil-aligned city you must do quests for Commissioner Varla Z'Velran. At the end of the quests for Varla, the recipe book is looted from a table at ( 61, 154, -130 ) Copy/waypoint 61, 154, -130.