1. Petrullo. Vincent "Peyotism as an Emergent Indian Culture", p. 51, Indians of the United States: Office of Indian Affairs, U.S. Dept. of Interior, April 1940.
2. PEYOTE INTOXICATION
3. La Barre, Weston The Peyote Cult. Yale Univ. Press, New Haven, 1938, p. 10 Yale University Publications in Anthropology , No. 19.