Tolong jelaskan mengenai Bacaan tambahan dari Thule Society

Gilbhard, Hermann. 1994. Die Thule-Gesellschaft. Kiessling Verlag. ISBN 3-930423-00-6.

Hale, Christopher. 2003. Himmler's Crusade: The True Story of the 1938 Nazi Expedition into Tibet. London: Transworld Publishers. ISBN 0-593-04952-7.

Kershaw, Ian. 2001. Hitler 1889–1936: Hubris. Penguin. ISBN 0-14-013363-1.

Sklar, Dusty. 1977. The Nazis and the Occult. New York: Dorset Press. ISBN 0-88029-412-4.

Peter Lavenda. 2007. Unholy Alliance. Continium Books. ISBN 0-8264-1409-5.