Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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