APA

Belgrave R., British Petroleum, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) & British Petroleum.The significance of the supply/demand projections to the year 2000. : .

Chicago

Belgrave R, British Petroleum, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) and British Petroleum.The significance of the supply/demand projections to the year 2000. : .

Harvard

Belgrave R., British Petroleum, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) and British Petroleum.The significance of the supply/demand projections to the year 2000. : .

MLA

Belgrave R, British Petroleum, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) and British Petroleum.: . .