Covey, S. R. (2004). The 8th habit: From effectiveness to greatness. Simon & Schuster, New Delhi.
Style de citation Chicago (17e éd.)Covey, Stephen R. The 8th Habit: From Effectiveness to Greatness. Simon & Schuster, New Delhi, 2004.
Style de citation MLA (9e éd.)Covey, Stephen R. The 8th Habit: From Effectiveness to Greatness. Simon & Schuster, New Delhi, 2004.
Attention : ces citations peuvent ne pas être correctes à 100%.