APA

Library of Congress, . (1991). Revised Library of Congress subject headings: cross-references from former to current subject headings. Washington, D.C: Cataloging Distribution Service, Library of Congress.

Chicago

Library of Congress, . 1991. Revised Library of Congress subject headings: cross-references from former to current subject headings. Washington, D.C: Cataloging Distribution Service, Library of Congress.

Harvard

Library of Congress, . (1991). Revised Library of Congress subject headings: cross-references from former to current subject headings. Washington, D.C: Cataloging Distribution Service, Library of Congress.

MLA

Library of Congress, . Revised Library of Congress subject headings: cross-references from former to current subject headings. Washington, D.C: Cataloging Distribution Service, Library of Congress. 1991.