Kultermann, U. (1992). The Hollow Column and the Family of Human Institutions. architectura.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKultermann, Udo. "The Hollow Column and the Family of Human Institutions." Architectura 1992.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKultermann, Udo. "The Hollow Column and the Family of Human Institutions." Architectura, 1992.
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