Library of Congress, P. a. S. D. (2009). Supplementary vocabularies: Free-floating subdivisions, genre/from headings, children's subject headings. Washington, D.C: Library of Congress.
Chicago Style CitationLibrary of Congress, Policy and Standards Division. Supplementary Vocabularies: Free-floating Subdivisions, Genre/from Headings, Children's Subject Headings. Washington, D.C: Library of Congress, 2009.
MLA CitationLibrary of Congress, Policy and Standards Division. Supplementary Vocabularies: Free-floating Subdivisions, Genre/from Headings, Children's Subject Headings. Washington, D.C: Library of Congress, 2009.
Warning: These citations may not always be 100% accurate.