Dyfyniad APA

Copeland, M. T. (1957). Executive at work. Has vald university press.

Dyfyniad Arddull Chicago

Copeland, Melvin T. Executive at Work. Cambridge: Has vald university press, 1957.

Dyfyniad MLA

Copeland, Melvin T. Executive at Work. Has vald university press, 1957.

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