American Library Association. Collection Management and Development Committee & Perkins, D. (1979). Guidelines for collection development. American Library Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)American Library Association. Collection Management and Development Committee و David Perkins. Guidelines for Collection Development. Chicago: American Library Association, 1979.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)American Library Association. Collection Management and Development Committee و David Perkins. Guidelines for Collection Development. American Library Association, 1979.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.