World Health Organization & ebrary, Inc. (2009). Basic documents ; including amendments adopted up to 31st May 2009 (47th ed.). World Health Organization.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)World Health Organization و Inc ebrary. Basic Documents ; Including Amendments Adopted Up to 31st May 2009. 47th ed. Geneva: World Health Organization, 2009.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)World Health Organization و Inc ebrary. Basic Documents ; Including Amendments Adopted Up to 31st May 2009. 47th ed. World Health Organization, 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.