Peter L. Berger, The Sacred Canopy; Peter L. Berger, A Rumor of Angels: Modern Society and the Rediscovering of the Supernatural (Garden City, N.Y.: Doubleday & Co., 1969); Mircea Eliade, Myths,
Dreams and Mysteries: The Encounter Between Contemporary Faiths and Archaic Reality (London: Harvill Press, 1960), 19; Clifford Geertz, The
Interpretation of Cultures, 107; Wade Clark Roof, Community and Commitment, 156; Philip E. Slater, Microcosm: Structural, Pschological and
Religious Evolution in Groups (New York: John Wiley & Sons, 1966).