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.
Citação norma 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.
Citação norma 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.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.