Lua APA (7ú heag.)

ZENGER JOHN H. (2002). EXTRAORDINARY LEADER: TURNING GOOD MANAGERS INTO GREAT LEADERS. MCGRAW-HILL.

Lua i Stíl Chicago (17ú heag.)

ZENGER JOHN H. EXTRAORDINARY LEADER: TURNING GOOD MANAGERS INTO GREAT LEADERS. NEW YORK: MCGRAW-HILL, 2002.

Lua MLA (9ú heag.)

ZENGER JOHN H. EXTRAORDINARY LEADER: TURNING GOOD MANAGERS INTO GREAT LEADERS. MCGRAW-HILL, 2002.

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