APA ציטוט

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

Chicago Style (17th ed.) Citation

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

ציטוט MLA

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