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Perrin, Philip; Martin, James; Barron, Simon; O'Neill, Fionnuala; Kate, McNutt, eds. (2008). The National Survey of Native Woodlands 2003–2008(PDF). Vol. 1. Dublin: National Parks & Wildlife Service. p. 187. Archived(PDF) from the original on 23 January 2018. Retrieved 24 September 2010.
Perrin, Philip; Martin, James; Barron, Simon; O'Neill, Fionnuala; Kate, McNutt, eds. (2008). The National Survey of Native Woodlands 2003–2008(PDF). Vol. 1. Dublin: National Parks & Wildlife Service. p. 187. Archived(PDF) from the original on 23 January 2018. Retrieved 24 September 2010.