¹Hawkes, Jacquetta. A Guide to the Prehistoric and Roman Monuments in England and Wales. London: Chatto and Windus, 1976. 43

²Schorr, F.J. and K.D. "Ballina." Ancient Ireland. Web. 27 Jan. 2011. <http://www.ancientireland.org/ballina/index.htm>.

³O'Neill, Noel. "Castlebar - County Mayo - The Dolmen Of The Four Maols." Castlebar - County Mayo - From The West of Ireland. Web. 27 Jan. 2011. <http://www.castlebar.ie/mayo_historical_and_archaeological_society/mhas-20040408.shtml>.

⁴O'Flanagan, Michael. Letters Containing Information Relative to the Antiquities of the County of Mayo. Vol. 18. Bray, 1927. 37, 77-81.

⁵Allcroft, A. H. The Circle and the Cross a Study in Continuity. Vol. 2. London: Macmillan, 1927. 49-56.

⁶Allcroft 23.