World Health Organization. (1998). Health 21: Health for all in the 21st century. World Health Organization.
Chicago-referens (17:e uppl.)World Health Organization. Health 21: Health for All in the 21st Century. Denmark: World Health Organization, 1998.
MLA-referens (8:e uppl.)World Health Organization. Health 21: Health for All in the 21st Century. World Health Organization, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.