Cassell, K. A., & Hiremath, U. (2018). Reference and information services: An introduction (Fourth edition.). ALA Neal-Schuman, an imprint of the American Library Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Cassell, Kay Ann, و Uma Hiremath. Reference and Information Services: An Introduction. Fourth edition. Chicago: ALA Neal-Schuman, an imprint of the American Library Association, 2018.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Cassell, Kay Ann, و Uma Hiremath. Reference and Information Services: An Introduction. Fourth edition. ALA Neal-Schuman, an imprint of the American Library Association, 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.