Wilkinson, B. (1948). The constitutional history of Medieval England, 1216-1399, with a select documents. Longmans.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWilkinson, Bertlie. The Constitutional History of Medieval England, 1216-1399, with a Select Documents. [London]: Longmans, 1948.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWilkinson, Bertlie. The Constitutional History of Medieval England, 1216-1399, with a Select Documents. Longmans, 1948.
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