1. Anderson, J. R. (2000). Cognitive psychology and its implications (5th ed.). New York, NY: Worth.
2. Barnes, B. (1974). Scientific knowledge and sociological theory. London: Routledge and Kegan Paul.
3. Barnes, B., Bloor, D., & Henry, J. (1996). Scientific knowledge: A sociological analysis. Chicago: University of Chicago Press.
4. Bechtel, W. (1988). Philosophy of science: An overview for cognitive science. Hillsdale, NJ: Erlbaum.
5. Bogen, J. (2013). Theory and observation in science. In E. N. Zalta (Ed.), The Stanford encyclopedia of philosophy (spring 2013 Edition). http://plato.stanford.edu/archives/spr2013/entries/science-theory-observation/ .