Παραπομπή APA

Drucker, P. F. (1995). Managing in a time of great change. Butterworth.

Παραπομπή Chicago Style

Drucker, Peter F. Managing in a Time of Great Change. London: Butterworth, 1995.

Παραπομπή MLA

Drucker, Peter F. Managing in a Time of Great Change. Butterworth, 1995.