Morris, E., & McDonough, J. (2005). Beethoven: The universal composer (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMorris, Edmund, और John McDonough. Beethoven: The Universal Composer. Unabridged. Prince Frederick: Recorded Books Inc., 2005.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMorris, Edmund, और John McDonough. Beethoven: The Universal Composer. Unabridged. Recorded Books Inc., 2005.
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