APA

Frankel P. H., Newton W. L., World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) & Newton W. L.Current and prospective developments in the economics of petroleum refining. : .

Chicago

Frankel Paul H, Newton Walter L, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) and Newton Walter L.Current and prospective developments in the economics of petroleum refining. : .

Harvard

Frankel P. H., Newton W. L., World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) and Newton W. L.Current and prospective developments in the economics of petroleum refining. : .

MLA

Frankel Paul H, Newton Walter L, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) and Newton Walter L.: . .