5Bronfenbrenner, U. , 1998, "The Ecology of Development Process", Child Psychology, vol. 1, pp. 993 - 1028.
6Bronfenbrenner, U., 1979, The Ecology of Human Development, Cambridge, MA. Harvard University Press, p. 54.
7Bronfenbrenner, U. , 1977, "Toward an Experimental Ecology of Human Development", American Psychologist, Vol. 32, pp. 513 -531.
8Gibson, J. J. , 1959, "Perception as a Function of Stimulation", in S. Koch (ed.), Psychology. A Study of Science, New York . McGraw-Hill, pp. 456 - 501.
9Lewin, K. , 1936, Principles of Topological Psychology, New York. The McGraw-Hill Book Company, Inc. , p. 17.
10Reed, E. S. , 1996, Encountering the world. Toward an Ecological Psychology, London. Oxford University Press, p. 189.
