YUKL, G. (1994). Leadership In Organizations/ Gary Yukl. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)YUKL, Gary. Leadership In Organizations/ Gary Yukl. Prentice-Hall, 1994.
Lua MLA (8ú heag.)YUKL, Gary. Leadership In Organizations/ Gary Yukl. Prentice-Hall, 1994.
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