APA

Pecqueur M., Elf Acquitaine, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) & Elf Acquitaine.Petrole brut et gaz naturel. : .

Chicago

Pecqueur M.A, Elf Acquitaine, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) and Elf Acquitaine.Petrole brut et gaz naturel. : .

Harvard

Pecqueur M., Elf Acquitaine, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) and Elf Acquitaine.Petrole brut et gaz naturel. : .

MLA

Pecqueur M.A, Elf Acquitaine, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) and Elf Acquitaine.: . .