LEFTON ROBERT E. (2004). LEADERSHIP THROUGH PEOPLE SKILLS. MCGRAW-HILL.
Chicagoスタイル(17版)引用形式LEFTON ROBERT E. LEADERSHIP THROUGH PEOPLE SKILLS. NEW YORK: MCGRAW-HILL, 2004.
MLA(9版)引用形式LEFTON ROBERT E. LEADERSHIP THROUGH PEOPLE SKILLS. MCGRAW-HILL, 2004.
警告: この引用は必ずしも正確ではありません.