Library of Congress. Information Systems Office. (1968). The MARC pilot experience: An informal summary. Library of Congress.
Citace podle Chicago (17th ed.)Library of Congress. Information Systems Office. The MARC Pilot Experience: An Informal Summary. Washington: Library of Congress, 1968.
Citace podle MLA (8th ed.)Library of Congress. Information Systems Office. The MARC Pilot Experience: An Informal Summary. Library of Congress, 1968.
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