Baker, Richard; Rogers, John; Schwalb, Robert J.; Wyatt, James (December 2008). Manual of the Planes. Renton, WA: Wizards of the Coast. pp. 20, 159. ISBN978-0-7869-5002-7. Archived from the original on November 14, 2009.
Baker, Richard; Rogers, John; Schwalb, Robert J.; Wyatt, James (December 2008). Manual of the Planes. Renton, WA: Wizards of the Coast. pp. 20, 159. ISBN978-0-7869-5002-7. Archived from the original on November 14, 2009.