USMARC concise formats :
update no. 2, August, 1991 /
prepared by Network Development and MARC Standards Office.
APA Citation
Library of Congress. Network Development and MARC Standards Office. (1991). USMARC concise formats: update no. 2, August, 1991. Washington: Cataloging Distribution Service, Library of Congress.
MLA Citation
Library of Congress. Network Development and MARC Standards Office. USMARC Concise Formats: Update No. 2, August, 1991. Washington: Cataloging Distribution Service, Library of Congress, 1991.
Warning: These citations may not always be complete (especially for serials).