Spiral Dynamics: Mastering Values, Leadership, and Change
by Don Beck & Christopher Cowan, 1996.
This is the book that popularized the term, “Spiral Dynamics,” and began the interest in applications of Gravesian theory. It is a simplification and application which still provides a good introduction to the work despite some dated references. Published by Blackwell Publishers.Available from Amazon.com.
Also available in Portuguese from Instituto Piaget