Não informado. (1960). Current literature. National Foundation, Department of Professional Education.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Current Literature. New York: National Foundation, Department of Professional Education, 1960.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Current Literature. National Foundation, Department of Professional Education, 1960.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.