Library of Congress. MARC Development Office. (1970). Films: A Marc Format. Specifications for magnetic tapes containing catalog records for motion pictures, filmstrips, and other pictorial media intended for projection. Library of Congress.
Cita Chicago Style (17a ed.)Library of Congress. MARC Development Office. Films: A Marc Format. Specifications for Magnetic Tapes Containing Catalog Records for Motion Pictures, Filmstrips, and Other Pictorial Media Intended for Projection. Washington: Library of Congress, 1970.
Cita MLA (9a ed.)Library of Congress. MARC Development Office. Films: A Marc Format. Specifications for Magnetic Tapes Containing Catalog Records for Motion Pictures, Filmstrips, and Other Pictorial Media Intended for Projection. Library of Congress, 1970.