18 References
Cole, S. (1983). The Hierarchy of the Sciences? American Journal of Sociology. 89 (1): 111–139.
Popper, K. (1959/2002). The Logic of Scientific Discovery. Abingdon-on-Thames: Routledge.
Sagan, C. (1995). The Demon-Haunted World: Science as a Candle in the Dark, Random House.