Turner, S. (2007) Fact, theory and hypothesis, including the history of the scientific fact. The blackwell encyclopedia of sociology 1st ed. Boston: Blackwell; 1554-57. http://www.sociologyencyclopedia.com/
Glaser, B. G., Strauss, A. L. (1967) The discovery of grounded theory: Strategies for qualitative research. Chicago: Aldine Publishing Company.
Glaser, B. G. (1978) Theoretical sensitivity: Advances in the methodology of grounded theory. Mill Valley, CA: Sociology Press.
Berger, J., Cohen, B. , Snell, J. L., Zelditch, M. Jr. (1962) Types of formalization in small group research. New York: Houghton-Mifflin.
Turner, S. (2008) How not to do science. Sociological Quarterly.