1. Allen W. R., Davis J. H., Ruhe J. A., Geurin V. T. (1998). Character Trait Importance and Reinforcement for Future Business Leaders: A Longitudinal Assessment. Journal of Contemporary Business Issues 6 (1): 5–22
2. Barber, M.: 2005, The Money Tree & How to Grow One: Creating Success in Your Business. (BarberBooks)
3. Bart C. (1996). The Impact of Mission on Firm Innovativeness. International Journal of Technology Management 11: 479–493
4. Bart C. (1997). Industrial Firms and the Power of Mission. Industrial Marketing Management 26:371–383
5. Baumrind, D.: 1998, ‘Reflections on Character and Competence,’ in A. Colby, J. James and D. Hart (eds.) Competence and Character (University of Chicago press, Chicago), pp. 1–28