References
- Campbell, J. (1993). The hero with a thousand faces (1993 reprint). London: Fontana Press.
- Pine, B. J., & Gilmore, J. H. (1999). The experience economy: Work is theatre & every business a stage. Boston, MA: Harvard Business School Press.
- Zubrin, R., & Wagner, R. (1996). The case for mars: The plan to settle the red planet and why we must. New York: Touchstone.