Não informado. (1978). QUARTERLY ECONOMIC REVIEW OF BAHRAIN, QATAR, OMAN, THE YEMENS. Economist Intelligence Unit.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. QUARTERLY ECONOMIC REVIEW OF BAHRAIN, QATAR, OMAN, THE YEMENS. London: Economist Intelligence Unit, 1978.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. QUARTERLY ECONOMIC REVIEW OF BAHRAIN, QATAR, OMAN, THE YEMENS. Economist Intelligence Unit, 1978.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.