APA

Library of Congress, Library of Congress, Library of Congress & Library of Congress. (1988). Library of Congress subject headings. Washington: Library of Congress.

Chicago

Library of Congress, Library of Congress, Library of Congress and Library of Congress. 1988. Library of Congress subject headings. Washington: Library of Congress.

Harvard

Library of Congress, Library of Congress, Library of Congress and Library of Congress. (1988). Library of Congress subject headings. Washington: Library of Congress.

MLA

Library of Congress, Library of Congress, Library of Congress and Library of Congress. Library of Congress subject headings. Washington: Library of Congress. 1988.