An Anatomy of leadership: princes, heroes and superman

Hubungan antara pertukaran atasan bawahan dan integritas pemimpin dengan perilaku pemimpin yang efektif = relationship between leader member exchange and leader integrity with leader effectiveness behaviour

Executive coaching for results : the definitive guide to developing organizational leaders

The leader : developing the skills & personal qualities you need to lead effectively / Normand L. Frigon and Harry K. Jackson

Leadership development/ George Shina