APA
E.U.A. Library of Congress. Subject Cataloging Division, . (1980). Library of congress subject headings. Washington: The Library.
Chicago
E.U.A. Library of Congress. Subject Cataloging Division, . 1980. Library of congress subject headings. Washington: The Library.
Harvard
E.U.A. Library of Congress. Subject Cataloging Division, . (1980). Library of congress subject headings. Washington: The Library.
MLA
E.U.A. Library of Congress. Subject Cataloging Division, . Library of congress subject headings. Washington: The Library. 1980.
