Lubell, H. (1974). Urban development and employment: The prospects for Calcutta. International Labour Office.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLubell, Harold. Urban Development and Employment: The Prospects for Calcutta. International Labour Office, 1974.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLubell, Harold. Urban Development and Employment: The Prospects for Calcutta. International Labour Office, 1974.
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