El-Imam, M. M. (1968). The Demand - Income Function - A Study in Aggregation. The Institute of National Planning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEl-Imam, M. M. The Demand - Income Function - A Study in Aggregation. Cairo: The Institute of National Planning, 1968.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEl-Imam, M. M. The Demand - Income Function - A Study in Aggregation. The Institute of National Planning, 1968.
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