Rothstein, S. (1955). The development of reference services through academic traditions, public library practice, and special librarianship. Association of College and Reference Libraries.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Rothstein, Samuel. The Development of Reference Services Through Academic Traditions, Public Library Practice, and Special Librarianship. Chicago: Association of College and Reference Libraries, 1955.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Rothstein, Samuel. The Development of Reference Services Through Academic Traditions, Public Library Practice, and Special Librarianship. Association of College and Reference Libraries, 1955.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.