Natural Church Development: A Guide to Eight Essential Qualities of Healthy Churches
By Christian A. Schwarz
This book is the original NCD ‘textbook’ and covers many of the basics of the original NCD research in one thousand churches in 32 countries in the mid ‘90s.
It deals with the interplay between organic and organizational elements of churches and how they produce health.
If you have already read Color Your World, this book will be ideal if you want more on the origins of NCD.