World Health Organization. (2011). World report on disability. World Health Organization.
Chicago-Zitierstil (17. Ausg.)World Health Organization. World Report on Disability. Geneva, Switzerland: World Health Organization, 2011.
MLA-Zitierstil (8. Ausg.)World Health Organization. World Report on Disability. World Health Organization, 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.