1. A stone axe factory at Pike of Stickle, Great Langdale, Westmorland;Bunch;Proceedings of the Prehistoric Society,1949
2. Cooney, G. and Mandal, S. 1998 The Irish Stone Axe Project – Monograph 1, Wordwell Ltd: Bray, Co. Wicklow, Eire.
3. Deer, W.A., Howie, R.A. and Zussman, J. 1992 An Introduction to the Rock-forming Minerals, Longman: Harlow.
4. Igneous Rocks of South-West England
5. Hutton, D.H.W. and Sanderson, D.J. (eds) 1984 Variscan Tectonics of the North Atlantic Region, Geological Society Special publication No. 14, Blackwell: Oxford.