(1948). Filing systems for engineering offices: A selected list of references.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFiling Systems for Engineering Offices: A Selected List of References. 1948.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFiling Systems for Engineering Offices: A Selected List of References. 1948.
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