Regensburger, K. A. (1911). Über den "Trovador" des García Gutiérrez, die Quelle von Verdis Oper "Il Trovatore".
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Tohutoru Kātū Chicago (17th ed.)
Regensburger, Karl August. Über Den "Trovador" Des García Gutiérrez, Die Quelle Von Verdis Oper "Il Trovatore". Berlin, 1911.
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Tohutoro MLA (9th ed.)
Regensburger, Karl August. Über Den "Trovador" Des García Gutiérrez, Die Quelle Von Verdis Oper "Il Trovatore". 1911.
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