Não informado. (1971). QUARTERLY ECONOMIC REVIEW OF OIL IN THE FAR EAST AND AUSTRALASIA. Economist Intelligence Unit.
Chicago (17e ed.) BronvermeldingNão informado. QUARTERLY ECONOMIC REVIEW OF OIL IN THE FAR EAST AND AUSTRALASIA. London: Economist Intelligence Unit, 1971.
MLA (8e ed.) BronvermeldingNão informado. QUARTERLY ECONOMIC REVIEW OF OIL IN THE FAR EAST AND AUSTRALASIA. Economist Intelligence Unit, 1971.
Let op: Deze citaties zijn niet altijd 100% accuraat.