Arthur Charles Fox-Davies: A Complete Guide to Heraldry. Dodge Pub. Co., New York NY 1909, S. 89–90 (Nachdruck. Bonanza Books, New York NY 1978, ISBN 0-517-26643-1). Charles Boutell, Arthur Charles Fox-Davies: The Handbook to English Heraldry. 11th edition, thoroughly revised. Reeves & Turner, London 1914, S. 168 (eingeschränkte Vorschau in der Google-Buchsuche).