Burchfield, J.1992: Lord Kelvin and the age of the Earth. Chicago IL: Chicago University Press.
2.
Chorley, R. J., Dunn, A. J. and Beckinsale, R. P.1964: The history of the study of land forms. Volume 1. London: Methuen.
3.
Davies, G. L.1968: The Earth in decay. London: MacDonald.
4.
Hutton, J.1788: Theory of the Earth; or an investigation of the laws observable in the composition, dissolution, and restoration of land upon the globe. Transactions of the Royal Society of Edinburgh1, 209-304.
5.
Livingstone, D.1992: The geographical tradition. Oxford: Blackwell.
6.
Playfair, J.1805: Life of Dr Hutton. Transactions of the Royal Society of Edinburgh5, 39-99.
