References
- Allaby, M. (2008) A dictionary of earth sciences 3rd ed., Oxford University Press: Oxford.
- Encyclopaedia Britannica (2015) Uniformitarianism [online]. (Accessed 19/03/2015).
- Holden, J. (2012) Introduction to Physical Geography and the Environment, Harlow, Essex: Pearson.
- Huddart, D. & Stott, T. (2013) Earth environments: past, present and future John Wiley & Sons.
- NASA (2015) Planets [online]. (Accessed 19/03/2015)