Gw mau tau Catatan dari Richard dari Cornwall

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Painter, Sidney. "The Crusade of Theobald of Champagne and Richard of Cornwall, 1239–1241". R. L. Wolff; H. W. Hazard, A History of the Crusades, Volume II: The Later Crusades, 1189–1311, pp. 463–86. Madison: University of Wisconsin Press, 1969.

Roche, T. W. E. The King of Almayne: A 13th-Century Englishman in Europe. London: John Murray, 1966.

Schwab, Ingo. "The Charters of Richard of Cornwall for the Empire". Thirteenth Century England 12 (2009), pp. 183–92.

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Weiler, Björn. "Image and Reality in Richard of Cornwall's German Career". English Historical Review 113, 454 (1998), pp. 1111–42.

Charter given by Richard as German King to the town of Zürich, 20.11.1262. Photograph taken from the collections of the Lichtbildarchiv älterer Originalurkunden at Marburg University showing Richards's seal.