DIGBY, M. (1960). The World Co-operative Movement Margaret Digby. Hutchinson University Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDIGBY, Margaret. The World Co-operative Movement Margaret Digby. Hutchinson University Library, 1960.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDIGBY, Margaret. The World Co-operative Movement Margaret Digby. Hutchinson University Library, 1960.
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