References

Burhoe, R. W.1976. “The Source of Civilization in the Natural Selection of Coadapted Information in Genes and CulturesZygon: Journal of Religion and Science  11 (September), 263–303.

Csikszentmihalyi, M., and I. S.Csikszentmihalyi. 1988. Optimal Experience: Studies of Flow in Consciousness. New York : Cambridge Univ. Press.

Sorokin, P. A.1957. Social and Cultural Dynamics. Boston : Porter Sargent.