Library of Congress. Policy and Standards Division. (2009). Library of Congress subject headings (31st ed.). Library of Congress, Cataloging Distribution Service.
Citação do estilo Chicago (17ª ed.)Library of Congress. Policy and Standards Division. Library of Congress Subject Headings. 31st ed. Washington, D.C: Library of Congress, Cataloging Distribution Service, 2009.
Citação MLA (9ª ed.)Library of Congress. Policy and Standards Division. Library of Congress Subject Headings. 31st ed. Library of Congress, Cataloging Distribution Service, 2009.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.