Elkington, J., & Hartigan, P. (2008). The power of unreasonable people: How social entrepreneurs create markets that change the world. Harvard Business School Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रElkington, John, और Pamela Hartigan. The Power of Unreasonable People: How Social Entrepreneurs Create Markets That Change the World. Boston, Mass.: Harvard Business School Press, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रElkington, John, और Pamela Hartigan. The Power of Unreasonable People: How Social Entrepreneurs Create Markets That Change the World. Harvard Business School Press, 2008.
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