Cita APA (7a ed.)

Bennis, W. G. (1984). The 4 competencies of leadership. [s.n.].

Cita Chicago Style (17a ed.)

Bennis, Warren G. The 4 Competencies of Leadership. [S.l.]: [s.n.], 1984.

Cita MLA (9a ed.)

Bennis, Warren G. The 4 Competencies of Leadership. [s.n.], 1984.