Baumgardt, D. (1947). Rationalism and the philosophy of despair: Pre-Nazi German ethics, 1913-1933. John Hopkins Univ. Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBaumgardt, David. Rationalism and the Philosophy of Despair: Pre-Nazi German Ethics, 1913-1933. Baltimore: John Hopkins Univ. Press, 1947.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBaumgardt, David. Rationalism and the Philosophy of Despair: Pre-Nazi German Ethics, 1913-1933. John Hopkins Univ. Press, 1947.
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