Simms, A., & Opll, F. (1995). Historic Towns Atlases: Urban History through Maps ; complete list of Historic Towns Atlases / Anngret Simms ; Ferdinand Opll.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSimms, Anngret, और Ferdinand Opll. Historic Towns Atlases: Urban History Through Maps ; Complete List of Historic Towns Atlases / Anngret Simms ; Ferdinand Opll. Brussels, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSimms, Anngret, और Ferdinand Opll. Historic Towns Atlases: Urban History Through Maps ; Complete List of Historic Towns Atlases / Anngret Simms ; Ferdinand Opll. 1995.
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