Khalil,Tarek. (1999). Civilization, Modern Technology and Sustainable Development (1.). Institute of National planning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKhalil,Tarek. Civilization, Modern Technology and Sustainable Development. 1. Cairo: Institute of National planning, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKhalil,Tarek. Civilization, Modern Technology and Sustainable Development. 1. Institute of National planning, 1999.
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