Παραπομπή APA

Crosby, P. B. (1996). The absolutes of leadership. Pfeiffer & company.

Παραπομπή Chicago Style

Crosby, Philip B. The Absolutes of Leadership. San Diego: Pfeiffer & company, 1996.

Παραπομπή MLA

Crosby, Philip B. The Absolutes of Leadership. Pfeiffer & company, 1996.