Library of Congress. Congressional Research Service & ProQuest (Firm). (1990). El Salvador Highlights, 1960-1990: A Summary of Major Turning Points in Salvadoran History and U.S. Policy. [publisher not identified].
Chicago Style (17th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). El Salvador Highlights, 1960-1990: A Summary of Major Turning Points in Salvadoran History and U.S. Policy. [Place of publication not identified]: [publisher not identified], 1990.
MLA (9th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). El Salvador Highlights, 1960-1990: A Summary of Major Turning Points in Salvadoran History and U.S. Policy. [publisher not identified], 1990.
Warning: These citations may not always be 100% accurate.