APA (7e ed.) Bronvermelding

Covey, S. R. (2004). The 8th habit: From effectiveness to greatness. Simon & Schuster, New Delhi.

Chicago (17e ed.) Bronvermelding

Covey, Stephen R. The 8th Habit: From Effectiveness to Greatness. Simon & Schuster, New Delhi, 2004.

MLA (9e ed.) Bronvermelding

Covey, Stephen R. The 8th Habit: From Effectiveness to Greatness. Simon & Schuster, New Delhi, 2004.

Let op: Deze citaties zijn niet altijd 100% accuraat.