Bonin, C. (2021). Belting: Belt voice training fur die singstimme. Books On Demand.
Cita Chicago Style (17a ed.)Bonin, Christin. Belting: Belt Voice Training Fur Die Singstimme. [S. l.]: Books On Demand, 2021.
Cita MLA (9a ed.)Bonin, Christin. Belting: Belt Voice Training Fur Die Singstimme. Books On Demand, 2021.
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