APA

Library of Congress, Library of Congress, . (1989). Free-floating subdivisions: an alphabetical index. Washington, D.C: Cataloging Distribution Service, Library of Congress.

Chicago

Library of Congress, Library of Congress, . 1989. Free-floating subdivisions: an alphabetical index. Washington, D.C: Cataloging Distribution Service, Library of Congress.

Harvard

Library of Congress, Library of Congress, . (1989). Free-floating subdivisions: an alphabetical index. Washington, D.C: Cataloging Distribution Service, Library of Congress.

MLA

Library of Congress, Library of Congress, . Free-floating subdivisions: an alphabetical index. Washington, D.C: Cataloging Distribution Service, Library of Congress. 1989.