Heyer, A. H. (1969). Historical sets, collected editions, and monuments of music, a guide to their contents (2nd ed.). American Library Association.
Citace podle Chicago (17th ed.)Heyer, Anna Harriet. Historical Sets, Collected Editions, and Monuments of Music, a Guide to Their Contents. 2nd ed. Chicago: American Library Association, 1969.
Citace podle MLA (9th ed.)Heyer, Anna Harriet. Historical Sets, Collected Editions, and Monuments of Music, a Guide to Their Contents. 2nd ed. American Library Association, 1969.
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