Cassette books.
APA Citation
Library of Congress. National Library Service for the Blind and Physically Handicapped. Cassette books. Washington: National Library Service for the Blind and Physically Handicapped, Library of Congress.
MLA Citation
Library of Congress. National Library Service for the Blind and Physically Handicapped. Cassette Books. Washington: National Library Service for the Blind and Physically Handicapped, Library of Congress,
Warning: These citations may not always be complete (especially for serials).