Levi, E., & Gehring, M. Paul Hirsch and Alfred Einstein: The trials and tribulations of collaboration in exile. The impact of nazism on twentieth-century music.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLevi, Erik, और Melina Gehring. "Paul Hirsch and Alfred Einstein: The Trials and Tribulations of Collaboration in Exile." The Impact of Nazism on Twentieth-century Music .
एमएलए (8वां संस्करण) प्रशस्ति पत्रLevi, Erik, और Melina Gehring. "Paul Hirsch and Alfred Einstein: The Trials and Tribulations of Collaboration in Exile." The Impact of Nazism on Twentieth-century Music, .
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