Ritchie, A. (1986). The influence of folk music in three works by Béla Bartók: Sonata no.1 for violin and piano, Sonata (1926) for piano, and 'Contrasts' for violin, clarinet and piano.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ritchie, Anthony. The Influence of Folk Music in Three Works by Béla Bartók: Sonata No.1 for Violin and Piano, Sonata (1926) for Piano, and 'Contrasts' for Violin, Clarinet and Piano. 1986.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ritchie, Anthony. The Influence of Folk Music in Three Works by Béla Bartók: Sonata No.1 for Violin and Piano, Sonata (1926) for Piano, and 'Contrasts' for Violin, Clarinet and Piano. 1986.
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