(1926). Library Extension: A Study of Public Library Conditions and Needs : By the Committee on Library Extension of the American Library Association. American Library Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Library Extension: A Study of Public Library Conditions and Needs : By the Committee on Library Extension of the American Library Association. Chicago: American Library Association, 1926.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Library Extension: A Study of Public Library Conditions and Needs : By the Committee on Library Extension of the American Library Association. American Library Association, 1926.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.