Center for Research Libraries (U.S.). Focus on global resources: Critical resources for research and teaching in the humanities, sciences and social sciences. Center for Research Libraries.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Center for Research Libraries (U.S.). Focus on Global Resources: Critical Resources for Research and Teaching in the Humanities, Sciences and Social Sciences. Chicago, IL: Center for Research Libraries.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Center for Research Libraries (U.S.). Focus on Global Resources: Critical Resources for Research and Teaching in the Humanities, Sciences and Social Sciences. Center for Research Libraries.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.