Hesselbein, F., & Cohen, P. M. (1999). Leader to leader: Enduring insights on leadership from the Drucker Foundation's award-winning journal. Jossey-Bass.
Chicago-referens (17:e uppl.)Hesselbein, Frances, och Paul M. Cohen. Leader to Leader: Enduring Insights on Leadership from the Drucker Foundation's Award-winning Journal. San Francisco: Jossey-Bass, 1999.
MLA-referens (8:e uppl.)Hesselbein, Frances, och Paul M. Cohen. Leader to Leader: Enduring Insights on Leadership from the Drucker Foundation's Award-winning Journal. Jossey-Bass, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.