Nichols, P. (1991). Social survey methods: A fieldguide for development workers. Oxfam Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNichols, Paul. Social Survey Methods: A Fieldguide for Development Workers. Oxford: Oxfam Publications, 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNichols, Paul. Social Survey Methods: A Fieldguide for Development Workers. Oxfam Publications, 1991.
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