Não informado. (1978). QUARTERLY ECONOMIC REVIEW OF BAHRAIN, QATAR, OMAN, THE YEMENS. Economist Intelligence Unit.
Chicago (17e ed.) BronvermeldingNão informado. QUARTERLY ECONOMIC REVIEW OF BAHRAIN, QATAR, OMAN, THE YEMENS. London: Economist Intelligence Unit, 1978.
MLA (8e ed.) BronvermeldingNão informado. QUARTERLY ECONOMIC REVIEW OF BAHRAIN, QATAR, OMAN, THE YEMENS. Economist Intelligence Unit, 1978.
Let op: Deze citaties zijn niet altijd 100% accuraat.