Kreienbrock, J. (2020). Passage on a ship of fools: Heine, Marx, and Ruge on the tragedy and farce of the German revolution. Heine-Jahrbuch.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKreienbrock, Jörg. "Passage on a Ship of Fools: Heine, Marx, and Ruge on the Tragedy and Farce of the German Revolution." Heine-Jahrbuch 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKreienbrock, Jörg. "Passage on a Ship of Fools: Heine, Marx, and Ruge on the Tragedy and Farce of the German Revolution." Heine-Jahrbuch, 2020.
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