APA (7e ed.) Bronvermelding

Covey Stephen R. (2004). Seven habits Of Highly Effective People. Simon Schuster.

Chicago (17e ed.) Bronvermelding

Covey Stephen R. Seven Habits Of Highly Effective People. London: Simon Schuster, 2004.

MLA (9e ed.) Bronvermelding

Covey Stephen R. Seven Habits Of Highly Effective People. Simon Schuster, 2004.

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