Library Association. Information Services Group. (1999). Guidelines for reference and information services in public libraries. Library Association Pub..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Library Association. Information Services Group. Guidelines for Reference and Information Services in Public Libraries. London: Library Association Pub., 1999.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Library Association. Information Services Group. Guidelines for Reference and Information Services in Public Libraries. Library Association Pub., 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.