American Association of State Libraries. Survey and Standards Committee. (1970). Standards for library functions at the state level. American Library Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)American Association of State Libraries. Survey and Standards Committee. Standards for Library Functions at the State Level. Chicago: American Library Association, 1970.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)American Association of State Libraries. Survey and Standards Committee. Standards for Library Functions at the State Level. American Library Association, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.