Library of Congress. Congressional Research Service & ProQuest (Firm). (1980). Sulfur in Crude Oil-: A Troubling Factor for Domestic Refineries. [publisher not identified].
Chicago Style (17th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). Sulfur in Crude Oil-: A Troubling Factor for Domestic Refineries. [Place of publication not identified]: [publisher not identified], 1980.
MLA (9th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). Sulfur in Crude Oil-: A Troubling Factor for Domestic Refineries. [publisher not identified], 1980.
Warning: These citations may not always be 100% accurate.