Library of Congress. MARC Development Office. (1972). Information on the MARC system (2d ed.). Washington: Library of Congress.
Chicago Style CitationLibrary of Congress. MARC Development Office. Information On the MARC System. 2d ed. Washington: Library of Congress, 1972.
MLA CitationLibrary of Congress. MARC Development Office. Information On the MARC System. 2d ed. Washington: Library of Congress, 1972.
Warning: These citations may not always be 100% accurate.