Harper, M. (1992). Their own idea: Lessons from workers' co-operatives. Intermediate Technology Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarper, Malcolm. Their Own Idea: Lessons from Workers' Co-operatives. London: Intermediate Technology Publications, 1992.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHarper, Malcolm. Their Own Idea: Lessons from Workers' Co-operatives. Intermediate Technology Publications, 1992.
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