APA (7e ed.) Bronvermelding

Covey, S. R. (2004). 8th Habit from effectiveness to greatness (Audio Book). Simon & Schuster Inc.

Chicago (17e ed.) Bronvermelding

Covey, Stephen R. 8th Habit from Effectiveness to Greatness (Audio Book). New York: Simon & Schuster Inc, 2004.

MLA (9e ed.) Bronvermelding

Covey, Stephen R. 8th Habit from Effectiveness to Greatness (Audio Book). Simon & Schuster Inc, 2004.