Accessed 28 March 2010. Glendinning, Miles; MacInnes, Ranald; MacKechnie, Aonghus. (1996) A History of Scottish Architecture: from the Renaissance to the
Thirteenth and Early Fourteenth Centuries, Audrey Dakin; Miles Glendinning; Aonghus MacKechnie (编), Scotland's Castle Culture, Berlinn, 2011, ISBN 978-1-906566-33-3