D. Cornell, "A Kingdom Cleared of Castles: the Role of the Castle in the Campaigns of Robert Bruce", The Scottish Historical Review 87 (224), pp. 233–257 (2008) JSTOR23074055doi10.3366/E0036924108000140
D. Cornell, "A Kingdom Cleared of Castles: the Role of the Castle in the Campaigns of Robert Bruce", The Scottish Historical Review 87 (224), pp. 233–257 (2008) JSTOR23074055doi10.3366/E0036924108000140
landmarktrust.org.uk
«Scotland». Landmark Trust. Consultado el 12 de noviembre de 2013.