Library of Congress. (1996). Subject headings. Washington, D.C: Library of Congress, Cataloging Distribution ServiceLibrary of Congress.
Παραπομπή Chicago StyleLibrary of Congress. Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution ServiceLibrary of Congress, 1996.
Παραπομπή MLALibrary of Congress. Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution ServiceLibrary of Congress, 1996.
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