1. Airaksinen, T. (2012). Professional ethics. In R. Chadwick (Ed.), Encyclopedia of applied ethics (2nd ed., Vol. 3, p. 616). Springer.
2. Airaksinen, T. (2012). The philosophy of professional ethics. In Ethics in institutional issues involving ethics and justice (Vol. I. p. 2). http://www.eolss.net/sample-chapters/c14/e1-37-02-02.pdf.
3. Audi, R. (1999). The Cambridge dictionary of philosophy (2nd ed., pp. 34–35). Cambridge University Press.
4. Bajaj, P. S., & Agrawal, R. (2009). Business ethics: An Indian perspective (p. 11). Biztantra Publishers.
5. Basham, A. L. (2004). The wonder that was India (3rd ed., p. 255). Wiley.