World Health Organization UNICEF EDC. (2003). WHO information series on School health: Document eight. World Health Organization.
Chicago-Zitierstil (17. Ausg.)World Health Organization UNICEF EDC. WHO Information Series on School Health: Document Eight. Geneva: World Health Organization, 2003.
MLA-Zitierstil (8. Ausg.)World Health Organization UNICEF EDC. WHO Information Series on School Health: Document Eight. World Health Organization, 2003.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.