Hellenistic Civilisation

[The Wizard]

You could also try The Greek World after Alexander 323 - 30 BC by Graham Shipley.

This book, unlike Alexander to Actium, looks at the Hellenistic world from another angle and examines if it really was a degradation in regards to the Classical Greek age (a sentiment sometimes expressed by Green), or if it was equal to if not greater than what preceded it.

Reading this and Green's work would give you both sides of the argument, from which you can deduce yourself what holds the most truth.