APA استشهاد

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

استشهاد بنمط شيكاغو

Gill, Roger. Theory and Practice of Leadership. 2nd. New Delhi: Sage, 2011.

MLA استشهاد

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