Lua APA (7ú heag.)

Kouzes, J. M., & Posner, B. Z. (2007). The leadership challenge (4th ed.). Jossey-Bass.

Lua i Stíl Chicago (17ú heag.)

Kouzes, James M., agus Barry Z. Posner. The Leadership Challenge. 4th ed. San Francisco, USA: Jossey-Bass, 2007.

Lua MLA (9ú heag.)

Kouzes, James M., agus Barry Z. Posner. The Leadership Challenge. 4th ed. Jossey-Bass, 2007.

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