APA aipamena

Drucker, P. F. (1982). The changing world of the executive. New York: A Truman Talley Book.

Chicago Style aipamena

Drucker, Peter F. The Changing World of the Executive. New York: A Truman Talley Book, 1982.

MLA aipamena

Drucker, Peter F. The Changing World of the Executive. New York: A Truman Talley Book, 1982.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.