Παραπομπή APA

Gill, R. (2011). Theory and practice of leadership (2nd ed.). Sage.

Παραπομπή Chicago Style

Gill, Roger. Theory and Practice of Leadership. 2nd ed. Los Angeles: Sage, 2011.

Παραπομπή MLA

Gill, Roger. Theory and Practice of Leadership. 2nd ed. Sage, 2011.