1. Baars, B.J. (1984). View from a road not taken. Contemporary Psychology, 29 ,804–805.
2. Bechtel, W. (1988). Philosophy of science: An overview of cognitive science. Hillsdale, NJ: Erlbaum.
3. Bechtel, W. (1989a). Integrating levels of inquiry in psychology. Invited address presented at the annual convention of the American Psychological Association, New Orleans, Louisiana, August 11-15.
4. Bechtel, W. (1989b). Personal communicatioa
5. Darden, L., & Maull, N. (1977). Interfield theories. Philosophy of Science, 44 ,43–64.