Dyfyniad APA

Lehrer, R. N. (1957). Work simplification: Creative thinking about work problems. Prentice Hall.

Dyfyniad Arddull Chicago

Lehrer, Robert N. Work Simplification: Creative Thinking About Work Problems. New Jersey: Prentice Hall, 1957.

Dyfyniad MLA

Lehrer, Robert N. Work Simplification: Creative Thinking About Work Problems. Prentice Hall, 1957.

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