APA

SCHERMAN W. S., Saba P. B. C., .Energy and basic petrochemicals. : .

Chicago

SCHERMAN William S, Saba Peter B Coaut, .Energy and basic petrochemicals. : .

Harvard

SCHERMAN W. S., Saba P. B. C., .Energy and basic petrochemicals. : .

MLA

SCHERMAN William S, Saba Peter B Coaut, .: . .