American Management Association. (1947). Incentives and work standards in the office . American Management Association.
Lua i Stíl Chicago (17ú heag.)American Management Association. Incentives and Work Standards in the Office . New York: American Management Association, 1947.
Lua MLA (8ú heag.)American Management Association. Incentives and Work Standards in the Office . American Management Association, 1947.
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