Hartzell, G. (2002). Increasing Your Influence by Addressing Self-Interest.
Chicago-Zitierstil (17. Ausg.)Hartzell, Gary. Increasing Your Influence by Addressing Self-Interest. 2002.
MLA-Zitierstil (9. Ausg.)Hartzell, Gary. Increasing Your Influence by Addressing Self-Interest. 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.