Habermann, J. (1998). Kaufmann Kohler and his teacher Samson Raphael Hirsch. Year Book / Leo Baeck Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHabermann, Jacob. "Kaufmann Kohler and His Teacher Samson Raphael Hirsch." Year Book / Leo Baeck Institute 1998.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHabermann, Jacob. "Kaufmann Kohler and His Teacher Samson Raphael Hirsch." Year Book / Leo Baeck Institute, 1998.
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