Title: ActionScript 3 Design Patterns - Object Oriented Programming Techniques
Author: William Sanders & Chandima Cumaranatunge
Publisher: O'Reilly
Price: $44.99 July 2007 version

Yet another home run to help the dedicated programmer to understand and apply object oriented programming.

If your just starting to code in Action Script, you might find this book too heavy, however, I recommend this book for the beginner as it simply explains with many examples what constitutes beautiful coding patterns.

I am enriched to have this book as one of my resources which I can refer to over and over.

HPP