Schemmel, M. (2010). Medieval representations of change and their early modern application. Max-Planck-Institut für Wissenschaftsgeschichte.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSchemmel, Matthias. Medieval Representations of Change and Their Early Modern Application. Berlin: Max-Planck-Institut für Wissenschaftsgeschichte, 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSchemmel, Matthias. Medieval Representations of Change and Their Early Modern Application. Max-Planck-Institut für Wissenschaftsgeschichte, 2010.
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