Union of International Associations. Directory of periodicals published by international organizations (Third edition.).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Union of International Associations. Directory of Periodicals Published by International Organizations. Third edition.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Union of International Associations. Directory of Periodicals Published by International Organizations. Third edition.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.