United Nations. Dept. of Economic and Social Affairs. (1962). Petroleum exploration: Capital requirements and methods of financing. United Nations.
Chicago (17e ed.) BronvermeldingUnited Nations. Dept. of Economic and Social Affairs. Petroleum Exploration: Capital Requirements and Methods of Financing. N.Y.: United Nations, 1962.
MLA (8e ed.) BronvermeldingUnited Nations. Dept. of Economic and Social Affairs. Petroleum Exploration: Capital Requirements and Methods of Financing. United Nations, 1962.
Let op: Deze citaties zijn niet altijd 100% accuraat.