Association of Research Libraries. (1990). ARL: A bimonthly newsletter of research library issues and actions. Association of Research Libraries.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Association of Research Libraries. ARL: A Bimonthly Newsletter of Research Library Issues and Actions. Washington, DC: Association of Research Libraries, 1990.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Association of Research Libraries. ARL: A Bimonthly Newsletter of Research Library Issues and Actions. Association of Research Libraries, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.