Riegger, W., Riegger, W., Kroll, W., Kouguell, A., Covell, J. T., & Kroll Quartet. (1961). Trio for piano, violin and cello [op. 1] String quartet no. 2, op. 43. Columbia ML 5589.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRiegger, Wallingford, Wallingford Riegger, William Kroll, Alexander Kouguell, John Thomas Covell, और Kroll Quartet. Trio for Piano, Violin and Cello [op. 1] String Quartet No. 2, Op. 43. S.l: Columbia ML 5589, 1961.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRiegger, Wallingford, et al. Trio for Piano, Violin and Cello [op. 1] String Quartet No. 2, Op. 43. Columbia ML 5589, 1961.
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