Não informado. (1982). Office Technology and People. Elsevier Science Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Office Technology and People. Essex, Inglaterra: Elsevier Science Publishers, 1982.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Office Technology and People. Elsevier Science Publishers, 1982.
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