Dyfyniad APA

Drucker, P. F. (1992). Managing for the future. Elsevier, Tuman Talley Books/Dutton.

Dyfyniad Arddull Chicago

Drucker, Peter F. Managing for the Future. New Delhi : New York: Elsevier, Tuman Talley Books/Dutton, 1992.

Dyfyniad MLA

Drucker, Peter F. Managing for the Future. Elsevier, Tuman Talley Books/Dutton, 1992.

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