Cullingworth, J. (1973). Problems of an urban society. George Allen and Unwin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCullingworth, J.B. Problems of an Urban Society. George Allen and Unwin, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCullingworth, J.B. Problems of an Urban Society. George Allen and Unwin, 1973.
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