Perlmutter, R. (2006). Beethoven's wig: Many more sing along symphonies. Rounder Records.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPerlmutter, Richard. Beethoven's Wig: Many More Sing Along Symphonies. Cambridge, Mass.: Rounder Records, 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPerlmutter, Richard. Beethoven's Wig: Many More Sing Along Symphonies. Rounder Records, 2006.
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