Lehrer, R. N. (1957). Work simplification: Creative thinking about work problems. Prentice Hall.
シカゴスタイル引用形Lehrer, Robert N. Work Simplification: Creative Thinking About Work Problems. New Jersey: Prentice Hall, 1957.
MLA引用形式Lehrer, Robert N. Work Simplification: Creative Thinking About Work Problems. Prentice Hall, 1957.
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