- Rudgeley, Richard
- Independent British scholar of archaeology, anthropology, and religious studies. Rudgeley’s volume The Alchemy of Culture: Intoxicants in Society (1993) revived interest in entheogen use through time, and more recently he has written books on prehistory, the Norse, Celts, and Pagans.
Historical dictionary of shamanism. Graham Harvey and Robert J. Wallis. 2007.