Library of Congress, Library of Congress. Descriptive Cataloging Division, & Library of Congress. Manuscripts Section. National union catalog of manuscript collections. Library of Congress.
Chicago Style (17th ed.) CitationLibrary of Congress, Library of Congress. Descriptive Cataloging Division, and Library of Congress. Manuscripts Section. National Union Catalog of Manuscript Collections. Washington: Library of Congress.
MLA (9th ed.) CitationLibrary of Congress, et al. National Union Catalog of Manuscript Collections. Library of Congress.
Warning: These citations may not always be 100% accurate.