Cambridge University Press's series "Key Themes in Ancient History" aims to provide short but scholarly and comprehensive introductions to important topics. The Ancient City, by Arjan Zuiderhoeck, is a worthy addition.
Urbanization has long been a central theme in the study of the Greco-Roman world. The literature, as a result, is enormous, impossible for a single person to control. But Zuiderhoeck's reading has been prodigious, and he has managed to distill it--and his own views--into 10 chapters that cover some of the most important aspects of ancient Greco-Roman cities.
These aspects, which run from politics to economy, social life and civic identity, to relations of cities with hegemonic powers, are framed within a discussion of the various views about what constitutes at city, what is unique about Greco-Roman cities, and how we know when Greco-Roman cities no longer exist. One important intervention is his discussion about whether these cities were states--here he comes down firmly on the "no" side, emphasizing especially the lack of mechanisms of law enforcement (the lack of police, the reliance of inhabitants on self-help), which he sees as crucial to identification of an urban space as a city-state. Some may find this argument a bit rarefied and perhaps a bit inconsequential; I'm not sure how much it really matters whether we see Athens or early Rome as a "state" (though perhaps it does matter if we want to see how James Scott's proposals a bout Seeing as a State might or might not apply).
But that's a minor matter in the broad sweep of The Ancient City. Zuiderhoeck offers an excellent, well-written, and very thorough treatment of his topic, making this book the first stop for anyone interested in learning about Greco-Roman cities. (The inclusion of the word "ancient" in the title is, I suppose, a reflection of persistent British practice: the book does not treat "the city city"--nothing about Sumeria, Carthage, etc.--but rather specifically the cities of the Greek world and the parts of the Mediterranean and western Europe under Roman control.) A few pages at the end offer wide-ranging suggestions for further reading (almost all in English); the bibliography is lengthy and a mine of resources.