Baumgardt, D. (1947). Rationalism and the philosophy of despair: Pre-Nazi German ethics, 1913-1933. John Hopkins Univ. Press.
Chicago-Zitierstil (17. Ausg.)Baumgardt, David. Rationalism and the Philosophy of Despair: Pre-Nazi German Ethics, 1913-1933. Baltimore: John Hopkins Univ. Press, 1947.
MLA-Zitierstil (8. Ausg.)Baumgardt, David. Rationalism and the Philosophy of Despair: Pre-Nazi German Ethics, 1913-1933. John Hopkins Univ. Press, 1947.
警告：這些引文格式不一定是100％准確.