Library of Congress. Information Systems Office. (1967). Project MARC: An Experiment in automating Library of Congress catalog data. Library of Congress.
Cita Chicago Style (17a ed.)Library of Congress. Information Systems Office. Project MARC: An Experiment in Automating Library of Congress Catalog Data. Washington: Library of Congress, 1967.
Cita MLA (9a ed.)Library of Congress. Information Systems Office. Project MARC: An Experiment in Automating Library of Congress Catalog Data. Library of Congress, 1967.
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