HERFURTH, C. P. (1937). A Tune a Day For Cello: A First Book for Violoncello Instruction in Group, Public School Classes or Individual Lessons. The Boston Music Co.
Chicago-referens (17:e uppl.)HERFURTH, C. Paul. A Tune a Day For Cello: A First Book for Violoncello Instruction in Group, Public School Classes or Individual Lessons. The Boston Music Co, 1937.
MLA-referens (8:e uppl.)HERFURTH, C. Paul. A Tune a Day For Cello: A First Book for Violoncello Instruction in Group, Public School Classes or Individual Lessons. The Boston Music Co, 1937.
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