Press, F and Siever, R (1986) Earth, W.H. Freeman and Co., San Francisco
Tarbuck, E.J. and Lutgens, F.K (1997) Earth Science: Eighth Edition, Prentice Hall, Hall Jersey
Moran, J.M, Morgan, M.D and Wiersma, J.H (1986) Introduction to Environmental Science: Second Edition, W.H. Freeman and Co., New York
Pickering, K.T and Owen, L.A (1994) An Introduction to Global Environmental Issues, Routledge, London and New York
Smith, P.G (ed.) (1981) The Cambridge Encyclopaedia of Earth Sciences, Cambridge University Press, London
Tarbuck, E.J. and Lutgens, F.K (1993) The Earth: An Introduction to Physical geography: Fourth Edition, Macmillam, New York
Press, F and Siever, R (1986) Earth, W.H. Freeman and Co., San Francisco
Tarbuck, E.J. and Lutgens, F.K (1997) Earth Science: Eighth Edition, Prentice Hall, Hall Jersey
Condie, K. C. (1997) Plate Tectonics and Crustal Evolution: Fourth Edition, Butterworth-Heinemann, Oxford
Smith, P.G (ed.) (1981) The Cambridge Encyclopaedia of Earth Sciences, Cambridge University Press, London
Tarbuck, E.J. and Lutgens, F.K (1993) The Earth: An Introduction to Physical geography: Fourth Edition, Macmillam, New York
Press, F and Siever, R (1986) Earth, W.H. Freeman and Co., San Francisco
Tarbuck, E.J. and Lutgens, F.K (1997) Earth Science: Eighth Edition, Prentice Hall, Hall Jersey
Gerrard, A.J (1988) Rocks and Landforms, Unwin Hyman, London
Smith, P.G (ed.) (1981) The Cambridge Encyclopaedia of Earth Sciences, Cambridge University Press, London
Tarbuck, E.J. and Lutgens, F.K (1993) The Earth: An Introduction to Physical geography: Fourth Edition, Macmillam, New York
Barrels, R.M. and MacKenzie, F.T (1971) Evolution of Sedimentary Rocks, Norton and Co., New York
Tarbuck, E.J. and Lutgens, F.K (1997) Earth Science: Eighth Edition, Prentice Hall, Hall Jersey
Cox, C.B and Moore, P.D (1985) Biogeography: An Ecological and Evolutionary Approach, Blackwell Scientific Publications, London
Gerrard, A.J (1988) Rocks and Landforms, Unwin Hyman, London
Pears, N (1985) Basic Biogeography, Longman Scientific and Technical, John Wiley and Sons Inc, New York
Raiswell, R.W., Brumblecombe, P., Dent, D.L., and Liss, P.S. (1980) – Environmental Chemistry, Edward Arnold, London
Selley, R.C. (1976) An Introduction to Sedimentology, Academic Press, London
Eyre, S.R (1968) Vegetation and Soils: A World Picture, Edward Arnold (publishers) Ltd, London
Tarbuck, E.J. and Lutgens, F.K (1997) Earth Science: Eighth Edition, Prentice Hall, Hall Jersey
Epstein (1968) Mineral Nutrient of Plants: Principles and Perspectives. John Wiley and Sons, London
Geiger, R (1950) The Climate Near the Ground, Cambridge Mass, Harvard University Press, USA
Krebs, C.J (1985) Ecology: The Experimental Analysis of Distribution and Abundance, Harper and Row, New York
Tarbuck, E.J. and Lutgens, F.K (1993) The Earth: An Introduction to Physical geography: Fourth Edition, Macmillam, New York
Allaby, M. (Editor) (1994) The Concise Oxford Dictionary of Ecology. Oxford University Press, Oxford.
Allaby, A. and Allaby, M. (Editors) (1990) The Concise Oxford Dictionary of Earth Sciences. Oxford University Press, Oxford.
Chambers (1994) The Chambers Dictionary. Chambers Harrap Publishers Ltd., Edinburgh.
Mayhew, S. and Penny, A. (1992) The concise Oxford Dictionary of Geography Oxford University Press, Oxford
Whitten, D.G.A. and Brooks, J.R.V (1977) The penguin Dictionary of Geology. Penguin Books, Middlesex