Harvard Business Review. The Harvard Business Review entrepreneur's Handbook. Harvard Business Review.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarvard Business Review. The Harvard Business Review Entrepreneur's Handbook. Harvard Business Review.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHarvard Business Review. The Harvard Business Review Entrepreneur's Handbook. Harvard Business Review.
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