Research says management is often the biggest obstacle in the adoption of Agile software development.

Management 3.0 is an attempt to inspire team leaders, development managers, and IT directors, who face the adoption of Agile software development in their organizations, by providing guidance and practices, and by applying complexity thinking to the craft, art, and science of Agile management.

You can also buy the book at Barnes & Noble, Borders, Bol.com, InformIT, and other book stores.