United States Library of Congress. (1995). Subject headings (18th ed.). Library of Congress, Cataloging Distribution Service.
Chicago-viite (17. p.)United States Library of Congress. Subject Headings. 18th ed. Washington, D.C: Library of Congress, Cataloging Distribution Service, 1995.
MLA-viite (9. p.)United States Library of Congress. Subject Headings. 18th ed. Library of Congress, Cataloging Distribution Service, 1995.
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