Public Library Association. Goals, Guidelines, and Standards Committee. (1979). The Public library mission statement and its imperatives for service. American Library Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Public Library Association. Goals, Guidelines, and Standards Committee. The Public Library Mission Statement and Its Imperatives for Service. Chicago: American Library Association, 1979.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Public Library Association. Goals, Guidelines, and Standards Committee. The Public Library Mission Statement and Its Imperatives for Service. American Library Association, 1979.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.