Gaya APA
Hatch, L, F., Matar, S. (1981).
From Hydrocarbons to Petrochemicals (1981).
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Houston : Gulf Publishing Company,.
Gaya MLA
Hatch, Lewis, F., Matar, Sami.
"From Hydrocarbons to Petrochemicals".
1981
:
Houston : Gulf Publishing Company,,
1981.
Text.