Library of Congress. Information Systems Office. (1970). MARC manuals used by the Library of Congress (2d ed.). Information Science and Automation Division, American Library Association.
Chicago Style (17th ed.) CitationLibrary of Congress. Information Systems Office. MARC Manuals Used by the Library of Congress. 2d ed. Chicago: Information Science and Automation Division, American Library Association, 1970.
MLA (8th ed.) CitationLibrary of Congress. Information Systems Office. MARC Manuals Used by the Library of Congress. 2d ed. Information Science and Automation Division, American Library Association, 1970.
Warning: These citations may not always be 100% accurate.