World Health Organization. Ageing and Life Course Unit & ebrary, Inc. (2008). WHO global report on falls prevention in older age. World Health Organization.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)World Health Organization. Ageing and Life Course Unit و Inc ebrary. WHO Global Report on Falls Prevention in Older Age. Geneva, Switzerland: World Health Organization, 2008.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)World Health Organization. Ageing and Life Course Unit و Inc ebrary. WHO Global Report on Falls Prevention in Older Age. World Health Organization, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.