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S. Shapiro, Thinking about mathematics: the philosophy of mathematics. New York: Oxford University Press, 2000 [Online]. Available: https://contentstore.cla.co.uk//secure/link?id=06cf28eb-ec40-e911-80cd-005056af4099
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D. Bostock, Philosophy of mathematics: an introduction. Chichester: Wiley-Blackwell, 2009 [Online]. Available: https://contentstore.cla.co.uk//secure/link?id=1e8f10e5-ec40-e911-80cd-005056af4099
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J. R. Brown, Philosophy of mathematics: a contemporary introduction to the world of proofs and pictures, 2nd ed. New York: Routledge, 2008 [Online]. Available: https://ezproxy.lib.gla.ac.uk/login?url=https://doi.org/10.4324/9780203932964
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A. George and D. J. Velleman, Philosophies of mathematics. Malden, MA.: Blackwell Publishers, 2002 [Online]. Available: https://contentstore.cla.co.uk//secure/link?id=fdb2cedc-ec40-e911-80cd-005056af4099
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A. C. Grayling, Philosophy. Oxford: Oxford University Press, 1998 [Online]. Available: https://contentstore.cla.co.uk//secure/link?id=3e3bedd4-ec40-e911-80cd-005056af4099
