Library of Congress. Professional Association. (1985). LCPA's index to Library of Congress information bulletin. Library of Congress Professional Association.
Chicago Style (17th ed.) CitationLibrary of Congress. Professional Association. LCPA's Index to Library of Congress Information Bulletin. Washington, D.C.: Library of Congress Professional Association, 1985.
MLA (9th ed.) CitationLibrary of Congress. Professional Association. LCPA's Index to Library of Congress Information Bulletin. Library of Congress Professional Association, 1985.
Warning: These citations may not always be 100% accurate.