1. US Department of Agriculture (USDA), US Department of Health and Human Services. Dietary guidelines for Americans. http://www.dietaryguidelines.gov. Accessed October 31, 2012.
2. Most Americans eat much less than recommended amounts of fruits and vegetables;Guenther;J Am Diet Assoc,2006
3. Low-fat milk consumption among children and adolescents in the United States, 2007-2008;Kit;NCHS Data Brief,2011
4. US Department of Education, National Center for Education Statistics. Early Childhood Program Participation Survey of the National Household Education Surveys Program (ECPP-NHES: 2005). http://nces.ed.gov/programs/digest/d09/tables/dt09_044.asp. Accessed October 31, 2012.
5. An ecological perspective on health promotion programs;McElroy;Health Educ Q,1988