Holland, J., & Campbell, J. (2005). Methods in development research: Combining qualitative and quantitative approaches. Practical Action Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHolland, Jeremy, और John Campbell. Methods in Development Research: Combining Qualitative and Quantitative Approaches. Rugby, Warwickshire, UK: Practical Action Publishing, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHolland, Jeremy, और John Campbell. Methods in Development Research: Combining Qualitative and Quantitative Approaches. Practical Action Publishing, 2005.
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