Dyfyniad APA

Clark, W. I. (1922). Health service in industry. The Macmillan company.

Dyfyniad Arddull Chicago

Clark, William Irving. Health Service in Industry. New York: The Macmillan company, 1922.

Dyfyniad MLA

Clark, William Irving. Health Service in Industry. The Macmillan company, 1922.

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