World Health Organization. (1998). Health 21: Health for all in the 21st century. World Health Organization.
Chicago-Zitierstil (17. Ausg.)World Health Organization. Health 21: Health for All in the 21st Century. Denmark: World Health Organization, 1998.
MLA-Zitierstil (8. Ausg.)World Health Organization. Health 21: Health for All in the 21st Century. World Health Organization, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.