Dyfyniad APA

Drucker, P. F. (1974). Management: Tasks, responsibilities, practices. New York: Harper & Row.

Dyfyniad Arddull Chicago

Drucker, Peter F. Management: Tasks, Responsibilities, Practices. New York: Harper & Row, 1974.

Dyfyniad MLA

Drucker, Peter F. Management: Tasks, Responsibilities, Practices. New York: Harper & Row, 1974.

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