APA (7e ed.) Bronvermelding

United Nations. Dept. of Economic and Social Affairs. (1962). Petroleum exploration: Capital requirements and methods of financing. United Nations.

Chicago (17e ed.) Bronvermelding

United Nations. Dept. of Economic and Social Affairs. Petroleum Exploration: Capital Requirements and Methods of Financing. N.Y.: United Nations, 1962.

MLA (8e ed.) Bronvermelding

United Nations. Dept. of Economic and Social Affairs. Petroleum Exploration: Capital Requirements and Methods of Financing. United Nations, 1962.