Kouzes, J. M. (1987). The leadership challenge: How to get extraordinary things done in organisations. Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)Kouzes, James M. The Leadership Challenge: How to Get Extraordinary Things Done in Organisations. San Fransisco: Jossey-Bass, 1987.
Lua MLA (9ú heag.)Kouzes, James M. The Leadership Challenge: How to Get Extraordinary Things Done in Organisations. Jossey-Bass, 1987.
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