Library of Congress. Congressional Research Service & ProQuest (Firm). (1989). El Salvador, 1979-1989: A Briefing Book on U.S. Aid and the Situation in El Salvador. [publisher not identified].
Chicago Style (17th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). El Salvador, 1979-1989: A Briefing Book on U.S. Aid and the Situation in El Salvador. [Place of publication not identified]: [publisher not identified], 1989.
MLA (9th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). El Salvador, 1979-1989: A Briefing Book on U.S. Aid and the Situation in El Salvador. [publisher not identified], 1989.
Warning: These citations may not always be 100% accurate.