David V. Day & Stanley M. Halpin 
An Integrative Approach to Leader Development [EPUB ebook] 
Connecting Adult Development, Identity, and Expertise

This book is a beginning, a first step, in taking leader development in organizations beyond conventional wisdom toward a scientifically sound research-based set of principles and practices. The authors looked beyond their own academic disciplines to bring to bear accumulated wisdom from researchers who have developed well-established and accepted