Não informado. (1983). Office administration and automation. Geyer-McAllister Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Office Administration and Automation. New York: Geyer-McAllister Publications, 1983.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Office Administration and Automation. Geyer-McAllister Publications, 1983.
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