League of Nations. Secretariat. Health Section & League of Nations. Health Organization. Epidemiological intelligence: Statistics of notifiable diseases. The League.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)League of Nations. Secretariat. Health Section و League of Nations. Health Organization. Epidemiological Intelligence: Statistics of Notifiable Diseases. Geneva: The League.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)League of Nations. Secretariat. Health Section و League of Nations. Health Organization. Epidemiological Intelligence: Statistics of Notifiable Diseases. The League.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.