Bennett, D. (2009). International Encyclopedia of Human Geography. Oxford: elsevier. Pp 369-378.
Halliday, J (1999), "Popper and the Philosophy of Education", Encyclopedia of Philosophy of Education.
Poper. K. R, (1999). All Life Is Problem Solving. Landan and New York: Routledge.
Wetteresten, J, (2007). Karl Popper and critical Rationalism. The Internet Encyclopedia of Philosophy.
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