Não informado. (1971). QUARTERLY ECONOMIC REVIEW OF OIL IN THE FAR EAST AND AUSTRALASIA. Economist Intelligence Unit.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. QUARTERLY ECONOMIC REVIEW OF OIL IN THE FAR EAST AND AUSTRALASIA. London: Economist Intelligence Unit, 1971.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. QUARTERLY ECONOMIC REVIEW OF OIL IN THE FAR EAST AND AUSTRALASIA. Economist Intelligence Unit, 1971.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.