Janauschek, Leopold: Originum Cisterciensium. Tomus I. Vindobonae 1877. S. 70. Nr. CLXXIII.

 

Robert Stalley: The Cistercian Monasteries Of Ireland. Yale University Press London & New Haven 1987

 

Barry W. O'Dwyer: Stephen of Lexington - Letters from Ireland 1228 - 1229. Cistercian Publications Inc Kalamazoo, Michigan 1982