Não informado. (1978). QUARTERLY ECONOMIC REVIEW OF BAHRAIN, QATAR, OMAN, THE YEMENS. Economist Intelligence Unit.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. QUARTERLY ECONOMIC REVIEW OF BAHRAIN, QATAR, OMAN, THE YEMENS. London: Economist Intelligence Unit, 1978.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. QUARTERLY ECONOMIC REVIEW OF BAHRAIN, QATAR, OMAN, THE YEMENS. Economist Intelligence Unit, 1978.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.