Cita APA

Library of Congress. MARC Development Office. (1974). Information on the MARC system (4th ed.). Library of Congress.

Citación estilo Chicago

Library of Congress. MARC Development Office. Information on the MARC System. 4th ed. Washington: Library of Congress, 1974.

Cita MLA

Library of Congress. MARC Development Office. Information on the MARC System. 4th ed. Library of Congress, 1974.

Warning: These citations may not always be 100% accurate.