Citazione APA

(1997). Library of Congress Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution Service.

Stile di citazione Chicago

Library of Congress Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution Service, 1997.

Citazione MLA

Library of Congress Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution Service, 1997.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.