The Public Health Nursing Section of the
American Public Health Association says:
 

“Public health nurses integrate community involvement and knowledge about the entire population with personal, clinical understandings of the health and illness experiences of individuals and families within the population. They translate and articulate the health and illness experiences of diverse, often vulnerable individuals and families in the population to health planners and policy makers, and assist members of the community to voice their problems and aspirations. Public health nurses are knowledgeable about multiple strategies for intervention, from those applicable to the entire population, to those for the family, and the individual. Public health nurses translate knowledge from the health and social sciences to individuals and population groups through targeted interventions, programs, and advocacy”. 

AHRQ (Agency for Healthcare Research and Quality) --Topic: Public Health

American Public Health Association (APHA)--Homepage

National Library of Medicine--Health Services Research & Public Health Information Programs

The Community Guide--The Guide to Community Preventive Services (The Community Guide) is a collection of evidence-based findings of the Community Preventive Services Task Force (CPSTF).