Sarkar, D. (2004). Lessons in Six Sigma: 72 must-know truths for managers. Response Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSarkar, Debashis. Lessons in Six Sigma: 72 Must-know Truths for Managers. New Delhi ; Thousand Oaks, Calif.: Response Books, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSarkar, Debashis. Lessons in Six Sigma: 72 Must-know Truths for Managers. Response Books, 2004.
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