Clark, G. (1981). Regional economic systems, spatial interdependence and the role of money. Croom Helm.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रClark, G. Regional Economic Systems, Spatial Interdependence and the Role of Money. Croom Helm, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रClark, G. Regional Economic Systems, Spatial Interdependence and the Role of Money. Croom Helm, 1981.
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