David J. Sumanth. Productivity Engineering and Management: .. McGraw- Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDavid J. Sumanth. Productivity Engineering and Management: .. McGraw- Hill.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDavid J. Sumanth. Productivity Engineering and Management: .. McGraw- Hill.
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