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.
Čikaški stil citiranja (17. izdanje)Levi, Erik, i Melina Gehring. "Paul Hirsch and Alfred Einstein: The Trials and Tribulations of Collaboration in Exile." The Impact of Nazism on Twentieth-century Music .
MLA način citiranja (8. izdanje)Levi, Erik, i 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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