Duguid. (2013). Volunteer Work, Informal Learning and Social Action (1.). SensePublishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDuguid. Volunteer Work, Informal Learning and Social Action. 1. SensePublishers, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDuguid. Volunteer Work, Informal Learning and Social Action. 1. SensePublishers, 2013.
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