O'BRIEN, L. (1992). Introducing quantitative geography: Measurement,methods and generalised liniar models. Routledge.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रO'BRIEN, Larry. Introducing Quantitative Geography: Measurement,methods and Generalised Liniar Models. London: Routledge, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रO'BRIEN, Larry. Introducing Quantitative Geography: Measurement,methods and Generalised Liniar Models. Routledge, 1992.
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