APA (7e ed.) Bronvermelding

LEFTON ROBERT E. (2004). LEADERSHIP THROUGH PEOPLE SKILLS. MCGRAW-HILL.

Chicago (17e ed.) Bronvermelding

LEFTON ROBERT E. LEADERSHIP THROUGH PEOPLE SKILLS. NEW YORK: MCGRAW-HILL, 2004.

MLA (9e ed.) Bronvermelding

LEFTON ROBERT E. LEADERSHIP THROUGH PEOPLE SKILLS. MCGRAW-HILL, 2004.