Campbell, D. P. (1998). Leadership in Action: Inklings - Down-to-Earth Life and Leadership. Center for Creative Leadership.
Chicago-Zitierstil (17. Ausg.)Campbell, David P. Leadership in Action: Inklings - Down-to-Earth Life and Leadership. [Place of publication not identified]: Center for Creative Leadership, 1998.
MLA-Zitierstil (9. Ausg.)Campbell, David P. Leadership in Action: Inklings - Down-to-Earth Life and Leadership. Center for Creative Leadership, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.