Παραπομπή APA

Clifford, W. G. (1995). The key to succes: The silence of leadership. Beacon books.

Παραπομπή Chicago Style

Clifford, William G. The Key to Succes: The Silence of Leadership. New Delhi: Beacon books, 1995.

Παραπομπή MLA

Clifford, William G. The Key to Succes: The Silence of Leadership. Beacon books, 1995.