Urban, M. (2009). Towards what Kind of Unity?: David Koigen, Leo Baeck and the Monism-Theism-Debate. Year Book / Leo Baeck Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUrban, Martina. "Towards What Kind of Unity?: David Koigen, Leo Baeck and the Monism-Theism-Debate." Year Book / Leo Baeck Institute 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUrban, Martina. "Towards What Kind of Unity?: David Koigen, Leo Baeck and the Monism-Theism-Debate." Year Book / Leo Baeck Institute, 2009.
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