Lehrer, R. N. (1957). Work simplification: Creative thinking about work problems. Prentice Hall.
Chicago-stil citatLehrer, Robert N. Work Simplification: Creative Thinking About Work Problems. New Jersey: Prentice Hall, 1957.
MLA-referensLehrer, Robert N. Work Simplification: Creative Thinking About Work Problems. Prentice Hall, 1957.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.