APA

Spitz P. H., Chem Systems, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) & Chem Systems.Technology trends in petrochemical manufacture. : .

Chicago

Spitz Peter H, Chem Systems, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) and Chem Systems.Technology trends in petrochemical manufacture. : .

Harvard

Spitz P. H., Chem Systems, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) and Chem Systems.Technology trends in petrochemical manufacture. : .

MLA

Spitz Peter H, Chem Systems, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) and Chem Systems.: . .