Barton, Allen (1955) 'The Concept of Property-Space in Social Research' , in Paul Lazarsfeld and Morris Rosenberg (eds.), The Language of Social Research. New York, pp. 40-62.
2.
Berger, Peter and Luckmann, Thomas (1966) The Social Construction of Reality, New York.
3.
Glaser, Barney and Strauss, Anselm (1967) The Discovery ofGrounded Theory, Chicago.
4.
Garfinkel, Harold (1967) Studies in Ethnomethodology, Englewood Cliffs.
5.
Kuhn, Thomas (1962) The Structure of Scientific Revolutions, Chicago.
6.
Mannheim, Karl, (1936) Ideology and Utopia, New York .
7.
Merton, Robert (1957) Social Theory and Social Structure, New York.
