A reader asked me to recommend a couple of recent books on spontaneous order. To me, the term spontaneous order is a way to conceptualize the interaction of people in the market place according to some ground rules. If you accept that definition, all books explaining how market works are also books on the topic of spontaneous order.
Some of my recommendations are (they are all written for non-specialists):
1) Origin of Wealth
2) The Mind of the Market
3) Basic Economics
4) Economics Facts and Fallacies
6) The Wisdom of Crowds