Heyer, A. H. (1957). Historical sets, collected editions and monuments of music: A guide to their contents. American Library Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Heyer, Anna Harriet. Historical Sets, Collected Editions and Monuments of Music: A Guide to Their Contents. Chicago: American Library Association, 1957.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Heyer, Anna Harriet. Historical Sets, Collected Editions and Monuments of Music: A Guide to Their Contents. American Library Association, 1957.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.