1. American Nurses Association 2016 Short Definitions of Ethical Principles and Theories http://www.nursingworld.org/MainMenuCategories/EthicsStandards/Resources/Ethics-Definitions.pdf
2. Baldwin , F. Cleaner Water: North Carolina's Straight-Pipe Elimination Project http://www.arc.gov/magazine/articles.asp?ARTICLE_ID=94
3. Clean water should be recognized as a human right;Barbour;PLOS Medicine,2009
4. Boettner , F. J. Clingerman R. McIlmoil E. Hansen L. Hartz A. Hereford C. Donohue 2014 An Assessment of Natural Assets in the Appalachian Region: Water Resources http://www.arc.gov/assets/research_reports/AssessmentofNaturalAssetsintheAppalachianRegion-ForestResources.pdf
5. Centers for Disease Control 2014 Water & Nutrition http://www.cdc.gov/healthywater/drinking/nutrition/index.html