Pred, A., & Pred, A. (1977). City-systems in advanced economies: Past growth, present processes and future development. Hutchinson.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPred, Allan, और Allen Pred. City-systems in Advanced Economies: Past Growth, Present Processes and Future Development. Hutchinson, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPred, Allan, और Allen Pred. City-systems in Advanced Economies: Past Growth, Present Processes and Future Development. Hutchinson, 1977.
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