General References on Anglesey:

Greenly, E. 1919 Geology of Anglesey - Memoir Geol. Survey. 2 Vols

Lynch, F. 1991 Prehistoric Anglesey: The archeology of the island to the Roman Conquest, 2nd Edition. Anglesey Antiquarian Society, Llangefni

Jones, W. E.(ed) 1990 A New Natural History of Anglesey. Studies in Anglesey History Vol 8, Anglesey Antiquarian Society, Llangefni.

Roberts, R. H. 1982 The Flowering Plants and Ferns of Anglesey. National Museum of Wales, Cardiff

Steele, P. & Williams, R. 2006. Mon Mam Cymru: The Guide to Anglesey. 3rd Edition. Llyfrau Magma, Llansadwrn, Ynys Mon