World Health Organization. Ageing and Life Course Unit & ebrary, Inc. (2008). WHO global report on falls prevention in older age. World Health Organization.
Chicago-viite (17. p.)World Health Organization. Ageing and Life Course Unit ja Inc ebrary. WHO Global Report on Falls Prevention in Older Age. Geneva, Switzerland: World Health Organization, 2008.
MLA-viite (9. p.)World Health Organization. Ageing and Life Course Unit ja Inc ebrary. WHO Global Report on Falls Prevention in Older Age. World Health Organization, 2008.
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