1. American Public Health Association 2001 Environmental health competency project: Recommendations for core competencies for local environmental health practice http://www.cdc.gov/nceh/ehs/Corecomp/Core_Competencies_EH_Practice.pdf
2. Association of Schools and Programs of Public Health 2008 Confronting the public health workforce crisis: ASPH statement http://www.asph.org/UserFiles/PHWFShortage0208.pdf
3. Association of Schools of Public Health Education Committee 2007 Master's degree in public health core competency development project version 2.3
4. Buckingham , M. 2003 Don't waste time and money: Competency programs are well-intentioned, but ineffective Gallup Business Journal