Merrill, S., & Grofman, B. (1999). A unified theory of voting: Directional and proximity spatial models. Cambridge University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMerrill, Samuel, और Bernard Grofman. A Unified Theory of Voting: Directional and Proximity Spatial Models. Cambridge, UK ; New York: Cambridge University Press, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMerrill, Samuel, और Bernard Grofman. A Unified Theory of Voting: Directional and Proximity Spatial Models. Cambridge University Press, 1999.
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