Kouzes, J. M. (1987). The leadership challenge: How to get extraordinary things done in organisations. Jossey-Bass.
Chicago-viite (17. p.)Kouzes, James M. The Leadership Challenge: How to Get Extraordinary Things Done in Organisations. San Fransisco: Jossey-Bass, 1987.
MLA-viite (9. p.)Kouzes, James M. The Leadership Challenge: How to Get Extraordinary Things Done in Organisations. Jossey-Bass, 1987.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.