Tichy, N. M. (2003). The Ethical Challenge (3rd ed.). Tata McGraw Hill Publishing.
Dyfyniad Arddull ChicagoTichy, Noel M. The Ethical Challenge. 3rd ed. New Delhi: Tata McGraw Hill Publishing, 2003.
Dyfyniad MLATichy, Noel M. The Ethical Challenge. 3rd ed. Tata McGraw Hill Publishing, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.