Não informado. (2004). Health educators at work. University of North Carolina, Department of Public Health Education.
Chicago-referens (17:e uppl.)Não informado. Health Educators at Work. Chapel Hill, NC: University of North Carolina, Department of Public Health Education, 2004.
MLA-referens (8:e uppl.)Não informado. Health Educators at Work. University of North Carolina, Department of Public Health Education, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.