Bourke, Edward, ‘A Preliminary Analysis of the Inner Enclosure of Skellig Michael, Co. Kerry’, in Tom Condit and Chris Corlett, (eds), Above and Beyond: Essays in Memory of Leo Swan, (Bray, 2005), pp. 121–37
de Paor, Liam, ‘A Survey of Skellig Mhichíl’, JRSAI, 85 (1955), pp. 174–87
Doherty, Charles, ‘Context: Ireland in the Viking Age’, in History Ireland, Vol. 22, No. 2, (MARCH/APRIL 2014), pp. 14-17
Gwynn, Aubrey, and Hadcock. R., Medieval Religious Hourses: Ireland, (Dublin, 1970), p 404
Horn, Walter, White Marshall, Jenny, and Rourke, Grellan, The Forgotten Hermitage of SkelligMichael,(Berkeley, Los Angeles and Oxford, 1990)
Manning, Conleth, ‘Skellig Michael’, in Anderw Carpenter and Rachel Moss, (eds), Art and Architecture of Ireland Volume I: Medieval c. 400–c. 1600, (Dublin, 2015), pp. 133-4
O’Sullivan, Ann, and Sheehan, John, The Iveragh Peninsula: an Archaeological Survey of south Kerry (Cork, 1996)