The graph shows the PRECEDE-PROCEED Model for Health Promotion Planning and Evaluation as thoroughly explained in the book of L.W. Green and Marhall W. Kreuter: "Health Promotion Planning, an Educational and Environmental Approach", Mayfield Publishing, 1991.

The content of the book is organized along the nine phases of the PRECEDE-PROCEED Model :
Social Diagnosis
Epidemiological Diagnosis
Behavioral and Environmental diagnosis
Educational and Organizational diagnosis
Administrative and Policy diagnosis
Implementation
Process evaluation
Impact evaluation
Outcome evaluation.

The book lays an excellent foundation for program planning, and the third edition from 1998 is presented to interested readers with recommended further readings and related web-sites.