World Health Organization UNICEF EDC. (2003). WHO information series on School health: Document eight. World Health Organization.
Chicago (17e ed.) BronvermeldingWorld Health Organization UNICEF EDC. WHO Information Series on School Health: Document Eight. Geneva: World Health Organization, 2003.
MLA (8e ed.) BronvermeldingWorld Health Organization UNICEF EDC. WHO Information Series on School Health: Document Eight. World Health Organization, 2003.
Let op: Deze citaties zijn niet altijd 100% accuraat.