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.
Styl ChicagoLibrary 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.
Citace podle MLALibrary 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.
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