Gaya APA

Heifetz, R, A., Linsky, M. (2002). Leadership on the Line: Staying Throught The Dangers of Leading . United States of America: Hardvard Business Review.

Gaya MLA

Heifetz, Ronald, A.., Linsky, Marty. "Leadership on the Line: Staying Throught The Dangers of Leading". United States of America: Hardvard Business Review, 2002. Text.