Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.