Yorkshire Heraldry Society. Aspects of heraldry. Yorkshire Heraldry Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रYorkshire Heraldry Society. Aspects of Heraldry. Leeds: Yorkshire Heraldry Society.
एमएलए (8वां संस्करण) प्रशस्ति पत्रYorkshire Heraldry Society. Aspects of Heraldry. Yorkshire Heraldry Society.
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