Cita APA (7a ed.)

PORTNOY ROBERT A. (1986). LEADERSHIP: WHAT EVERY LEADER SHOULD KNOW ABOUT PEOPLE. PRENTICE -HALL INTERNATIONAL, INC.

Cita Chicago Style (17a ed.)

PORTNOY ROBERT A. LEADERSHIP: WHAT EVERY LEADER SHOULD KNOW ABOUT PEOPLE. NEW JERSEY: PRENTICE -HALL INTERNATIONAL, INC, 1986.

Cita MLA (9a ed.)

PORTNOY ROBERT A. LEADERSHIP: WHAT EVERY LEADER SHOULD KNOW ABOUT PEOPLE. PRENTICE -HALL INTERNATIONAL, INC, 1986.