Bass [3] , Burns [4] , Yukl [5]

Lewin, Lippit & White [11] , Vroom & Yetton [14] , Yukl [15]

Blake, Shepard & Mouton [10] , Ha-Vikström [9] , Hersey & Blanchard [15]

Transactional

Autocratic

Task/goal-oriented

Transformational

Democratic

Relation/people-oriented

Laissez-faire

Laissez-faire

Laissez-faire