Παραπομπή APA

Drucker, P. F. (1969). Preparing Tommorows Buisness Leaders Todays. N.J. Prentice Hall.

Παραπομπή Chicago Style

Drucker, Peter F. Preparing Tommorows Buisness Leaders Todays. Engle Wood Cliffs: N.J. Prentice Hall, 1969.

Παραπομπή MLA

Drucker, Peter F. Preparing Tommorows Buisness Leaders Todays. N.J. Prentice Hall, 1969.