Dyfyniad APA

Drucker, P. (1992). Managing for the future: The 1990s and beyond. TMH.

Dyfyniad Arddull Chicago

Drucker, Peter. Managing for the Future: The 1990s and Beyond. New delhi: TMH, 1992.

Dyfyniad MLA

Drucker, Peter. Managing for the Future: The 1990s and Beyond. TMH, 1992.

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