Thomas Schelling - Sorting and Mixing: Race and Sex (1978)
Moving into the socioeconomic applications of emergence theory, Schelling (Nobel laureate #2 in this collection) gives a model-based analysis of feedback loops within free market social systems, taken from his text Micromotives and Macrobehaviour. The result is a somewhat more insidious emergent result than the constructive formations we've seen in previous accounts: Schelling's models suggests that minor dispositions against living in a racial minority can result in a neighbourhood's total racial segregation.
Appearing at almost precisely the same time as the rise in popularity of game theory, it incorporates many of the same ideas and approaches. It seems that Micromotives is to economics what The Evolution of Cooperation and The Selfish Gene are to evolutionary theory. Schelling's work is similarly appealing in scope and presentation, and significantly less dogmatic than the hardline reductionism of Dawkins.