APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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