This is one of the premiere texts on how to get an intentional community up and running in the 21st century.
This is the bible for living a life that makes ecological sense, one that is consequently conducive to peace through cooperation. Mollison not only focuses on the specifics of natural systems, in all types of climates, and how we can successfully interact with these bodies of trees, water, soils and more, but he also discusses patterns in nature and how they can inform us in our own design of human communities.
One of the foremost instructors of the Enneagram utilizes narratives gleaned from panel discussions to not only present an overview but to focus on type-based patterns of attention and intuition.
Palmer gives another fairly comprehensive overview with a focus on how types come together in love and work.
This is one of the premiere texts on how to apply the principles of dynamic self-governance in workplaces, governments, and organizations.